Add error mapping for Amplify app not found in specified region

.changeset/tasty-rivers-double.md

@@ -0,0 +1,5 @@
+---
+'@aws-amplify/backend-deployer': patch
+---
+
+Added error mapping for app name not available in the region

packages/backend-deployer/src/cdk_error_mapper.test.ts

@@ -659,6 +659,13 @@ npm error enoent`,
     errorName: 'LambdaEmptyZipFault',
     expectedDownstreamErrorMessage: undefined,
   },
+  {
+    errorMessage: 'Error: No apps found with name my-app in region us-west-2',
+    expectedTopLevelErrorMessage:
+      'No Amplify app found with name "my-app" in region "us-west-2".',
+    errorName: 'AmplifyAppNotFoundError',
+    expectedDownstreamErrorMessage: undefined,
+  },
 ];
 
 void describe('invokeCDKCommand', { concurrency: 1 }, () => {

packages/backend-deployer/src/cdk_error_mapper.ts

@@ -497,6 +497,20 @@ export class CdkErrorMapper {
       errorName: 'CloudFormationDeploymentError',
       classification: 'ERROR',
     },
+    // This type of error often occurs when:
+    // Users have not deployed their app to the specified region.
+    // There's a mismatch between the app name in the local configuration and the deployed app name.
+    // Users are working in a different AWS account or region than where the app is deployed.
+    {
+      errorRegex:
+        /No apps found with name (?<appName>.*) in region (?<region>.*)/,
+      humanReadableErrorMessage:
+        'No Amplify app found with name "{appName}" in region "{region}".',
+      resolutionMessage:
+        'Ensure that an Amplify app named "{appName}" exists in the "{region}" region.',
+      errorName: 'AmplifyAppNotFoundError',
+      classification: 'ERROR',
+    },
   ];
 }
 
@@ -528,4 +542,5 @@ export type CDKDeploymentError =
   | 'SyntaxError'
   | 'GetLambdaLayerVersionError'
   | 'LambdaEmptyZipFault'
-  | 'LambdaMaxSizeExceededError';
+  | 'LambdaMaxSizeExceededError'
+  | 'AmplifyAppNotFoundError';