diff --git a/package.json b/package.json
index 76710cec..47cd41eb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bfx-report",
-  "version": "4.11.1",
+  "version": "4.11.2",
   "description": "Reporting tool",
   "main": "worker.js",
   "license": "Apache-2.0",
diff --git a/test/1-api.spec.js b/test/1-api.spec.js
index 76cc15f9..00ef9516 100644
--- a/test/1-api.spec.js
+++ b/test/1-api.spec.js
@@ -194,7 +194,7 @@ describe('API', () => {
     assert.isObject(res.body.error)
     assert.propertyVal(res.body.error, 'code', 401)
     assert.propertyVal(res.body.error, 'message', 'Unauthorized')
-    assert.propertyVal(res.body.error, 'data', null)
+    assert.isObject(res.body.error.data)
     assert.propertyVal(res.body, 'id', null)
     assert.isString(res.body.jsonrpc)
   })
@@ -1199,10 +1199,11 @@ describe('API', () => {
     assert.isObject(res.body)
     assert.isObject(res.body.error)
     assert.propertyVal(res.body.error, 'code', 400)
-    assert.isArray(res.body.error.data)
-    assert.isAbove(res.body.error.data.length, 0)
+    assert.isObject(res.body.error.data)
+    assert.isArray(res.body.error.data.errorMetadata)
+    assert.isAbove(res.body.error.data.errorMetadata.length, 0)
 
-    res.body.error.data.forEach((item) => {
+    res.body.error.data.errorMetadata.forEach((item) => {
       assert.isObject(item)
     })
 
diff --git a/workers/loc.api/helpers/schema.js b/workers/loc.api/helpers/schema.js
index 94fd02a9..93ea76a9 100644
--- a/workers/loc.api/helpers/schema.js
+++ b/workers/loc.api/helpers/schema.js
@@ -56,23 +56,7 @@ const dateFormat = {
     'YYYY-MM-DD'
   ]
 }
-const language = {
-  type: 'string',
-  enum: [
-    'en',
-    'en-US',
-    'ru',
-    'zh-CN',
-    'zh-TW',
-    'tr',
-    'tr-TR',
-    'es',
-    'es-EM',
-    'pt',
-    'pt-PT',
-    'pt-BR'
-  ]
-}
+const language = { type: 'string' }
 
 const paramsSchemaForPayInvoiceList = {
   ...paramsSchemaForApi,
diff --git a/workers/loc.api/i18next/index.js b/workers/loc.api/i18next/index.js
index 5db2016d..a344d24a 100644
--- a/workers/loc.api/i18next/index.js
+++ b/workers/loc.api/i18next/index.js
@@ -23,9 +23,9 @@ module.exports = (params) => {
   const configs = merge(
     {
       fallbackLng: {
-        es: ['es-EM'],
-        pt: ['pt-BR'],
-        zh: ['zh-CN'],
+        es: ['es-EM', 'en'],
+        pt: ['pt-BR', 'en'],
+        zh: ['zh-CN', 'en'],
         default: ['en']
       },
       ns: Object.values(TRANSLATION_NAMESPACES),
diff --git a/workers/loc.api/responder/index.js b/workers/loc.api/responder/index.js
index af64293a..84c07eab 100644
--- a/workers/loc.api/responder/index.js
+++ b/workers/loc.api/responder/index.js
@@ -1,5 +1,7 @@
 'use strict'
 
+const { omit } = require('lib-js-util-base')
+
 const AbstractWSEventEmitter = require('../abstract.ws.event.emitter')
 
 const {
@@ -130,7 +132,6 @@ const _getErrorWithMetadataForNonBaseError = (args, err) => {
     err.message = err.message.replace(']', `,"${symbol}"]`)
     err.statusCode = 500
     err.statusMessage = `Invalid symbol error, '${symbol}' is not supported`
-    err.data = [{ symbol }]
 
     return err
   }
@@ -163,12 +164,23 @@ const _getErrorMetadata = (args, err, name) => {
   const message = bfxApiErrorMessage
     ? `${statusMessage}: BFX API Error${bfxApiStatusText}${bfxApiRawBodyResponse}`
     : statusMessage
-  const extendedData = bfxApiErrorMessage
-    ? {
-        bfxApiErrorMessage,
-        ...data
-      }
-    : data
+  const pubRequestParams = (
+    args?.params &&
+    typeof args?.params === 'object'
+  )
+    ? omit(args.params, [
+      'id',
+      'subAccountApiKeys',
+      'subAccountPassword',
+      'addingSubUsers',
+      'removingSubUsersByEmails'
+    ])
+    : args?.params ?? null
+  const extendedData = {
+    pubRequestParams,
+    bfxApiErrorMessage,
+    errorMetadata: data
+  }
 
   const error = Object.assign(
     errWithMetadata,