diff --git a/src/v0/util/facebookUtils/networkHandler.js b/src/v0/util/facebookUtils/networkHandler.js
index e0b29077e7..46ac59a07a 100644
--- a/src/v0/util/facebookUtils/networkHandler.js
+++ b/src/v0/util/facebookUtils/networkHandler.js
@@ -110,9 +110,7 @@ const errorDetailsMap = {
       .setStat({
         [TAG_NAMES.ERROR_TYPE]: ERROR_TYPES.AUTH,
       })
-      .setMessage(
-        'The session has been invalidated because the user changed their password or Facebook has changed the session for security reasons',
-      )
+      .setMessageField('error_user_msg')
       .build(),
 
     463: new ErrorDetailsExtractorBuilder()
@@ -120,56 +118,56 @@ const errorDetailsMap = {
       .setStat({
         [TAG_NAMES.ERROR_TYPE]: ERROR_TYPES.AUTH,
       })
-      .setMessageField('message')
+      .setMessageField('error_user_msg')
       .build(),
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(400)
       .setStat({
         [TAG_NAMES.ERROR_TYPE]: ERROR_TYPES.AUTH,
       })
-      .setMessage('Invalid OAuth 2.0 access token')
+      .setMessageField('error_user_msg')
       .build(),
   },
   3: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(400)
-      .setMessage('Capability or permissions issue.')
+      .setMessageField('error_user_msg')
       .build(),
   },
   2: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(500)
-      .setMessage('Temporary issue due to downtime.')
+      .setMessageField('error_user_msg')
       .build(),
   },
   341: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(500)
-      .setMessage('Application limit reached: Temporary issue due to downtime or throttling')
+      .setMessageField('error_user_msg')
       .build(),
   },
   368: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(500)
-      .setMessage('Temporarily blocked for policies violations.')
+      .setMessageField('error_user_msg')
       .build(),
   },
   5000: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(500)
-      .setMessage('Unknown Error Code')
+      .setMessageField('error_user_msg')
       .build(),
   },
   4: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(429)
-      .setMessage('API Too Many Calls')
+      .setMessageField('error_user_msg')
       .build(),
   },
   17: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(429)
-      .setMessage('API User Too Many Calls')
+      .setMessageField('error_user_msg')
       .build(),
   },
   // facebook custom audience related error codes
@@ -179,9 +177,7 @@ const errorDetailsMap = {
   294: {
     default: new ErrorDetailsExtractorBuilder()
       .setStatus(400)
-      .setMessage(
-        'Missing permission. Please make sure you have ads_management permission and the application is included in the allowlist',
-      )
+      .setMessageField('error_user_msg')
       .build(),
   },
   1487301: {
@@ -217,7 +213,10 @@ const errorDetailsMap = {
       .build(),
   },
   200: {
-    default: new ErrorDetailsExtractorBuilder().setStatus(403).setMessageField('message').build(),
+    default: new ErrorDetailsExtractorBuilder()
+      .setStatus(403)
+      .setMessageField('error_user_msg')
+      .build(),
   },
   21009: {
     default: new ErrorDetailsExtractorBuilder().setStatus(500).setMessageField('message').build(),
@@ -239,9 +238,11 @@ const getStatus = (error) => {
   const isErrorDetailEmpty = isEmpty(errorDetail);
   if (isErrorDetailEmpty) {
     // Unhandled error response
+    const errorMessage = get(error?.error || error, 'error_user_msg');
     return {
       status: errorStatus,
       stats: { [TAG_NAMES.META]: METADATA.UNHANDLED_STATUS_CODE },
+      errorMessage: errorMessage || JSON.stringify(error),
     };
   }
   errorStatus = errorDetail.status;
diff --git a/test/integrations/destinations/facebook_pixel/dataDelivery/business.ts b/test/integrations/destinations/facebook_pixel/dataDelivery/business.ts
index 1b425ac5fa..2b4af61ac3 100644
--- a/test/integrations/destinations/facebook_pixel/dataDelivery/business.ts
+++ b/test/integrations/destinations/facebook_pixel/dataDelivery/business.ts
@@ -42,7 +42,7 @@ export const testScenariosForV1API: ProxyV1TestData[] = [
         body: {
           output: {
             status: 400,
-            message: 'Invalid OAuth 2.0 access token',
+            message: 'The access token could not be decrypted',
             statTags: {
               ...statTags,
               errorCategory: 'dataValidation',
@@ -51,7 +51,7 @@ export const testScenariosForV1API: ProxyV1TestData[] = [
             },
             response: [
               {
-                error: 'Invalid OAuth 2.0 access token',
+                error: 'The access token could not be decrypted',
                 statusCode: 400,
                 metadata: generateMetadata(1),
               },
diff --git a/test/integrations/destinations/facebook_pixel/dataDelivery/data.ts b/test/integrations/destinations/facebook_pixel/dataDelivery/data.ts
index dc30b25d14..0e004c1183 100644
--- a/test/integrations/destinations/facebook_pixel/dataDelivery/data.ts
+++ b/test/integrations/destinations/facebook_pixel/dataDelivery/data.ts
@@ -45,12 +45,13 @@ export const v0TestData = [
         body: {
           output: {
             status: 400,
-            message: 'Invalid OAuth 2.0 access token',
+            message: 'The access token could not be decrypted',
             destinationResponse: {
               error: {
                 code: 190,
                 fbtrace_id: 'fbpixel_trace_id',
                 message: 'The access token could not be decrypted',
+                error_user_msg: 'The access token could not be decrypted',
                 type: 'OAuthException',
               },
               status: 500,
@@ -202,7 +203,7 @@ export const v0TestData = [
         body: {
           output: {
             status: 429,
-            message: 'API User Too Many Calls',
+            message: 'User request limit reached',
             destinationResponse: {
               error: {
                 message: 'User request limit reached',
@@ -414,7 +415,7 @@ export const v0TestData = [
         body: {
           output: {
             status: 400,
-            message: 'Capability or permissions issue.',
+            message: 'Some error in permission',
             destinationResponse: {
               error: {
                 message: 'Some error in permission',
@@ -466,7 +467,8 @@ export const v0TestData = [
         body: {
           output: {
             status: 500,
-            message: 'Unhandled random error',
+            message:
+              '{"message":"Unhandled random error","type":"RandomException","code":5,"error_subcode":12,"fbtrace_id":"facebook_px_trace_id_10"}',
             destinationResponse: {
               error: {
                 message: 'Unhandled random error',
diff --git a/test/integrations/destinations/facebook_pixel/dataDelivery/oauth.ts b/test/integrations/destinations/facebook_pixel/dataDelivery/oauth.ts
index c6d938c627..bb4fd582f0 100644
--- a/test/integrations/destinations/facebook_pixel/dataDelivery/oauth.ts
+++ b/test/integrations/destinations/facebook_pixel/dataDelivery/oauth.ts
@@ -28,11 +28,11 @@ export const oauthScenariosV1: ProxyV1TestData[] = [
         body: {
           output: {
             status: 400,
-            message: 'Capability or permissions issue.',
+            message: 'Some error in permission',
             statTags,
             response: [
               {
-                error: 'Capability or permissions issue.',
+                error: 'Some error in permission',
                 statusCode: 400,
                 metadata: generateMetadata(1),
               },
diff --git a/test/integrations/destinations/facebook_pixel/dataDelivery/other.ts b/test/integrations/destinations/facebook_pixel/dataDelivery/other.ts
index e25cc8e07c..154c6f75ad 100644
--- a/test/integrations/destinations/facebook_pixel/dataDelivery/other.ts
+++ b/test/integrations/destinations/facebook_pixel/dataDelivery/other.ts
@@ -31,14 +31,14 @@ export const otherScenariosV1: ProxyV1TestData[] = [
         body: {
           output: {
             status: 429,
-            message: 'API User Too Many Calls',
+            message: 'User request limit reached',
             statTags: {
               ...statTags,
               errorType: 'throttled',
             },
             response: [
               {
-                error: 'API User Too Many Calls',
+                error: 'User request limit reached',
                 statusCode: 429,
                 metadata: generateMetadata(1),
               },
@@ -72,7 +72,8 @@ export const otherScenariosV1: ProxyV1TestData[] = [
         body: {
           output: {
             status: 500,
-            message: 'Unhandled random error',
+            message:
+              '{"message":"Unhandled random error","type":"RandomException","code":5,"error_subcode":12,"fbtrace_id":"facebook_px_trace_id_10"}',
             statTags: {
               ...statTags,
               errorType: 'retryable',
@@ -80,7 +81,8 @@ export const otherScenariosV1: ProxyV1TestData[] = [
             },
             response: [
               {
-                error: 'Unhandled random error',
+                error:
+                  '{"message":"Unhandled random error","type":"RandomException","code":5,"error_subcode":12,"fbtrace_id":"facebook_px_trace_id_10"}',
                 statusCode: 500,
                 metadata: generateMetadata(1),
               },
diff --git a/test/integrations/destinations/facebook_pixel/network.ts b/test/integrations/destinations/facebook_pixel/network.ts
index 97e4cd6361..a6ff50623b 100644
--- a/test/integrations/destinations/facebook_pixel/network.ts
+++ b/test/integrations/destinations/facebook_pixel/network.ts
@@ -15,6 +15,7 @@ export const networkCallsData = [
       data: {
         error: {
           message: 'The access token could not be decrypted',
+          error_user_msg: 'The access token could not be decrypted',
           type: 'OAuthException',
           code: 190,
           fbtrace_id: 'fbpixel_trace_id',
diff --git a/test/integrations/destinations/fb/dataDelivery/data.ts b/test/integrations/destinations/fb/dataDelivery/data.ts
index 9ee19af265..dfa5dbc65e 100644
--- a/test/integrations/destinations/fb/dataDelivery/data.ts
+++ b/test/integrations/destinations/fb/dataDelivery/data.ts
@@ -59,6 +59,7 @@ export const existingTestData = [
             message: 'Invalid OAuth 2.0 access token',
             destinationResponse: {
               error: {
+                error_user_msg: 'Invalid OAuth 2.0 access token',
                 code: 190,
                 fbtrace_id: 'fbpixel_trace_id',
                 message: 'The access token could not be decrypted',
@@ -274,7 +275,7 @@ export const existingTestData = [
         body: {
           output: {
             status: 429,
-            message: 'API User Too Many Calls',
+            message: 'User request limit reached',
             destinationResponse: {
               error: {
                 message: 'User request limit reached',
diff --git a/test/integrations/destinations/fb/dataDelivery/other.ts b/test/integrations/destinations/fb/dataDelivery/other.ts
index 9ac3f14fb5..36d3e45f53 100644
--- a/test/integrations/destinations/fb/dataDelivery/other.ts
+++ b/test/integrations/destinations/fb/dataDelivery/other.ts
@@ -31,14 +31,14 @@ export const otherScenariosV1: ProxyV1TestData[] = [
         body: {
           output: {
             status: 429,
-            message: 'API User Too Many Calls',
+            message: 'User request limit reached',
             statTags: {
               ...statTags,
               errorType: 'throttled',
             },
             response: [
               {
-                error: 'API User Too Many Calls',
+                error: 'User request limit reached',
                 statusCode: 429,
                 metadata: generateMetadata(1),
               },
diff --git a/test/integrations/destinations/fb/network.ts b/test/integrations/destinations/fb/network.ts
index 31bbaf0b6e..1aed48136c 100644
--- a/test/integrations/destinations/fb/network.ts
+++ b/test/integrations/destinations/fb/network.ts
@@ -30,6 +30,7 @@ export const networkCallsData = [
       data: {
         error: {
           message: 'The access token could not be decrypted',
+          error_user_msg: 'Invalid OAuth 2.0 access token',
           type: 'OAuthException',
           code: 190,
           fbtrace_id: 'fbpixel_trace_id',
diff --git a/test/integrations/destinations/fb_custom_audience/dataDelivery/data.ts b/test/integrations/destinations/fb_custom_audience/dataDelivery/data.ts
index b41c656d9f..cd440aaa37 100644
--- a/test/integrations/destinations/fb_custom_audience/dataDelivery/data.ts
+++ b/test/integrations/destinations/fb_custom_audience/dataDelivery/data.ts
@@ -623,6 +623,8 @@ export const existingTestData = [
                 fbtrace_id: 'A3b8C6PpI-kdIOwPwV4PANi',
                 message:
                   'Error validating access token: Session has expired on Tuesday, 01-Aug-23 10:12:14 PDT. The current time is Sunday, 28-Jan-24 16:01:17 PST.',
+                error_user_msg:
+                  'Error validating access token: Session has expired on Tuesday, 01-Aug-23 10:12:14 PDT. The current time is Sunday, 28-Jan-24 16:01:17 PST.',
                 type: 'OAuthException',
               },
               status: 400,
diff --git a/test/integrations/destinations/fb_custom_audience/network.ts b/test/integrations/destinations/fb_custom_audience/network.ts
index 369c27afa9..ba14d537ad 100644
--- a/test/integrations/destinations/fb_custom_audience/network.ts
+++ b/test/integrations/destinations/fb_custom_audience/network.ts
@@ -514,6 +514,8 @@ export const networkCallsData = [
         error: {
           message:
             'Error validating access token: Session has expired on Tuesday, 01-Aug-23 10:12:14 PDT. The current time is Sunday, 28-Jan-24 16:01:17 PST.',
+          error_user_msg:
+            'Error validating access token: Session has expired on Tuesday, 01-Aug-23 10:12:14 PDT. The current time is Sunday, 28-Jan-24 16:01:17 PST.',
           type: 'OAuthException',
           code: 190,
           error_subcode: 463,