diff --git a/docs/content/en/docs-dev/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-dev/user-guide/managing-piped/configuring-notifications.md
index 43ba511317..59d0fd5def 100644
--- a/docs/content/en/docs-dev/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-dev/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> | PipeCD sends a notification when a deployment is completed, while it does not send a notification when a deployment status changes to DEPLOYMENT_ROLLING_BACK because it is not a completion status. See [#4547](https://github.com/pipe-cd/pipecd/issues/4547) |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.39.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.39.x/user-guide/managing-piped/configuring-notifications.md
index 32961eba9a..9a731981ed 100644
--- a/docs/content/en/docs-v0.39.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.39.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> | PipeCD sends a notification when a deployment is completed, while it does not send a notification when a deployment status changes to DEPLOYMENT_ROLLING_BACK because it is not a completion status. See [#4547](https://github.com/pipe-cd/pipecd/issues/4547) |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.40.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.40.x/user-guide/managing-piped/configuring-notifications.md
index 32961eba9a..9a731981ed 100644
--- a/docs/content/en/docs-v0.40.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.40.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> | PipeCD sends a notification when a deployment is completed, while it does not send a notification when a deployment status changes to DEPLOYMENT_ROLLING_BACK because it is not a completion status. See [#4547](https://github.com/pipe-cd/pipecd/issues/4547) |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.41.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.41.x/user-guide/managing-piped/configuring-notifications.md
index 32961eba9a..537f4b3c86 100644
--- a/docs/content/en/docs-v0.41.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.41.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.42.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.42.x/user-guide/managing-piped/configuring-notifications.md
index 32961eba9a..9a731981ed 100644
--- a/docs/content/en/docs-v0.42.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.42.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> | PipeCD sends a notification when a deployment is completed, while it does not send a notification when a deployment status changes to DEPLOYMENT_ROLLING_BACK because it is not a completion status. See [#4547](https://github.com/pipe-cd/pipecd/issues/4547) |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.43.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.43.x/user-guide/managing-piped/configuring-notifications.md
index 32961eba9a..537f4b3c86 100644
--- a/docs/content/en/docs-v0.43.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.43.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.44.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.44.x/user-guide/managing-piped/configuring-notifications.md
index e69af6d8bd..4991e199ab 100644
--- a/docs/content/en/docs-v0.44.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.44.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> | PipeCD sends a notification when a deployment is completed, while it does not send a notification when a deployment status changes to DEPLOYMENT_ROLLING_BACK because it is not a completion status. See [#4547](https://github.com/pipe-cd/pipecd/issues/4547) |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack
 
diff --git a/docs/content/en/docs-v0.45.x/user-guide/managing-piped/configuring-notifications.md b/docs/content/en/docs-v0.45.x/user-guide/managing-piped/configuring-notifications.md
index 43ba511317..f7a4ed6934 100644
--- a/docs/content/en/docs-v0.45.x/user-guide/managing-piped/configuring-notifications.md
+++ b/docs/content/en/docs-v0.45.x/user-guide/managing-piped/configuring-notifications.md
@@ -16,23 +16,23 @@ Notification configuration including:
 [Notification Route](../configuration-reference/#notificationroute) matches events based on their metadata like `name`, `group`, `app`, `labels`.
 Below is the list of supporting event names and their groups.
 
-| Event | Group | Supported |
-|-|-|-|
-| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
-| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |
-| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |
-| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |
+| Event | Group | Supported | Description |
+|-|-|-|-|
+| DEPLOYMENT_TRIGGERED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_PLANNED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_APPROVED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_WAIT_APPROVAL | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_ROLLING_BACK | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| DEPLOYMENT_SUCCEEDED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_CANCELLED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| DEPLOYMENT_TRIGGER_FAILED | DEPLOYMENT | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
+| APPLICATION_SYNCED | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_OUT_OF_SYNC | APPLICATION_SYNC | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_HEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| APPLICATION_UNHEALTHY | APPLICATION_HEALTH | <p style="text-align: center;"><input type="checkbox" disabled></p> |  |
+| PIPED_STARTED | PIPED | <p style="text-align: center;"><input type="checkbox" checked  disabled></p> |  |
+| PIPED_STOPPED | PIPED | <p style="text-align: center;"><input type="checkbox" checked disabled></p> |  |
 
 ### Sending notifications to Slack