diff --git a/src/pages/home/report/ReportActionItemSingle.tsx b/src/pages/home/report/ReportActionItemSingle.tsx
index 7c42991d2852..3d4c1fdadbda 100644
--- a/src/pages/home/report/ReportActionItemSingle.tsx
+++ b/src/pages/home/report/ReportActionItemSingle.tsx
@@ -63,7 +63,10 @@ const showUserDetails = (accountID: string) => {
     Navigation.navigate(ROUTES.PROFILE.getRoute(accountID, Navigation.getReportRHPActiveRoute()));
 };
 
-const showWorkspaceDetails = (reportID: string) => {
+const showWorkspaceDetails = (reportID: string | undefined) => {
+    if (!reportID) {
+        return;
+    }
     Navigation.navigate(ROUTES.REPORT_WITH_ID_DETAILS.getRoute(reportID, Navigation.getReportRHPActiveRoute()));
 };
 
@@ -84,14 +87,16 @@ function ReportActionItemSingle({
     const {translate} = useLocalize();
     const personalDetails = usePersonalDetails();
     const policy = usePolicy(report?.policyID);
-    const delegatePersonalDetails = personalDetails?.[action?.delegateAccountID ?? ''];
+    const delegatePersonalDetails = action?.delegateAccountID ? personalDetails?.[action?.delegateAccountID] : undefined;
     const ownerAccountID = iouReport?.ownerAccountID ?? action?.childOwnerAccountID;
     const isReportPreviewAction = action?.actionName === CONST.REPORT.ACTIONS.TYPE.REPORT_PREVIEW;
     const actorAccountID = ReportUtils.getReportActionActorAccountID(action, iouReport, report);
-    const [invoiceReceiverPolicy] = useOnyx(`${ONYXKEYS.COLLECTION.POLICY}${report?.invoiceReceiver && 'policyID' in report.invoiceReceiver ? report.invoiceReceiver.policyID : -1}`);
+    const [invoiceReceiverPolicy] = useOnyx(
+        `${ONYXKEYS.COLLECTION.POLICY}${report?.invoiceReceiver && 'policyID' in report.invoiceReceiver ? report.invoiceReceiver.policyID : CONST.DEFAULT_NUMBER_ID}`,
+    );
 
     let displayName = ReportUtils.getDisplayNameForParticipant(actorAccountID);
-    const {avatar, login, pendingFields, status, fallbackIcon} = personalDetails?.[actorAccountID ?? -1] ?? {};
+    const {avatar, login, pendingFields, status, fallbackIcon} = personalDetails?.[actorAccountID ?? CONST.DEFAULT_NUMBER_ID] ?? {};
     const accountOwnerDetails = getPersonalDetailByEmail(login ?? '');
     // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
     let actorHint = (login || (displayName ?? '')).replace(CONST.REGEX.MERGED_ACCOUNT_PREFIX, '');
@@ -102,13 +107,12 @@ function ReportActionItemSingle({
 
     let avatarSource = avatar;
     let avatarId: number | string | undefined = actorAccountID;
-
     if (isWorkspaceActor) {
         displayName = ReportUtils.getPolicyName(report, undefined, policy);
         actorHint = displayName;
         avatarSource = ReportUtils.getWorkspaceIcon(report, policy).source;
         avatarId = report?.policyID;
-    } else if (action?.delegateAccountID && personalDetails?.[action?.delegateAccountID]) {
+    } else if (delegatePersonalDetails) {
         displayName = delegatePersonalDetails?.displayName ?? '';
         avatarSource = delegatePersonalDetails?.avatar;
         avatarId = delegatePersonalDetails?.accountID;
@@ -149,7 +153,7 @@ function ReportActionItemSingle({
 
         secondaryAvatar = reportIcons.at(avatarIconIndex) ?? {name: '', source: '', type: CONST.ICON_TYPE_AVATAR};
     } else if (ReportUtils.isInvoiceReport(iouReport)) {
-        const secondaryAccountId = iouReport?.managerID ?? -1;
+        const secondaryAccountId = iouReport?.managerID ?? CONST.DEFAULT_NUMBER_ID;
         const secondaryUserAvatar = personalDetails?.[secondaryAccountId ?? -1]?.avatar ?? FallbackAvatar;
         const secondaryDisplayName = ReportUtils.getDisplayNameForParticipant(secondaryAccountId);
 
@@ -186,7 +190,7 @@ function ReportActionItemSingle({
 
     const showActorDetails = useCallback(() => {
         if (isWorkspaceActor) {
-            showWorkspaceDetails(reportID ?? '');
+            showWorkspaceDetails(reportID);
         } else {
             // Show participants page IOU report preview
             if (iouReportID && displayAllActors) {
@@ -199,8 +203,8 @@ function ReportActionItemSingle({
 
     const shouldDisableDetailPage = useMemo(
         () =>
-            CONST.RESTRICTED_ACCOUNT_IDS.includes(actorAccountID ?? -1) ||
-            (!isWorkspaceActor && ReportUtils.isOptimisticPersonalDetail(action?.delegateAccountID ? Number(action.delegateAccountID) : actorAccountID ?? -1)),
+            CONST.RESTRICTED_ACCOUNT_IDS.includes(actorAccountID ?? CONST.DEFAULT_NUMBER_ID) ||
+            (!isWorkspaceActor && ReportUtils.isOptimisticPersonalDetail(action?.delegateAccountID ? Number(action.delegateAccountID) : actorAccountID ?? CONST.DEFAULT_NUMBER_ID)),
         [action, isWorkspaceActor, actorAccountID],
     );
 
@@ -226,8 +230,8 @@ function ReportActionItemSingle({
         }
         return (
             <UserDetailsTooltip
-                accountID={Number(icon.id ?? -1)}
-                delegateAccountID={Number(action?.delegateAccountID ?? -1)}
+                accountID={Number(delegatePersonalDetails && !isWorkspaceActor ? actorAccountID : icon.id ?? CONST.DEFAULT_NUMBER_ID)}
+                delegateAccountID={action?.delegateAccountID}
                 icon={icon}
             >
                 <View>
@@ -277,7 +281,7 @@ function ReportActionItemSingle({
                                 <ReportActionItemFragment
                                     // eslint-disable-next-line react/no-array-index-key
                                     key={`person-${action?.reportActionID}-${index}`}
-                                    accountID={Number(icon.id) ?? -1}
+                                    accountID={Number(delegatePersonalDetails && !isWorkspaceActor ? actorAccountID : icon.id ?? CONST.DEFAULT_NUMBER_ID)}
                                     fragment={{...fragment, type: fragment.type ?? '', text: fragment.text ?? ''}}
                                     delegateAccountID={action?.delegateAccountID}
                                     isSingleLine