Merge pull request #287433 from alvin-l-han/main

 Adding links to error codes for CreateCallFailed events (new)

Author: prmerger-automator[bot]

articles/communication-services/how-tos/call-automation/actions-for-call-control.md

@@ -166,7 +166,7 @@ The response provides you with CallConnection object that you can use to take fu
 2. `ParticipantsUpdated` event that contains the latest list of participants in the call.
 ![Sequence diagram for placing an outbound call.](media/make-call-flow.png)
 
-In the case where the call fails, you will receive a `CallDisconnected` and `CreateCallFailed` event with error codes for further troubleshooting.
+In the case where the call fails, you will receive a `CallDisconnected` and `CreateCallFailed` event with error codes for further troubleshooting (see [this page](./../../resources/troubleshooting/voice-video-calling/troubleshooting-codes.md) for more information on Call Automation error codes).
 
 ## Connect to a call (in preview)
 

articles/communication-services/how-tos/call-automation/handle-events-with-event-processor.md

@@ -69,7 +69,7 @@ CreateCallEventResult eventResult = await createCallResult.WaitForEventProcessor
 CallConnected returnedEvent = eventResult.SuccessResult;
 ```
 
-With EventProcessor, we can easily wait CallConnected event until the call is established. If the call was never established (that is, callee never picked up the phone), it throws Timeout Exception.  If the creation of the call otherwise fails, you will receive the `CallDisconnected` and `CreateCallFailed` events with error codes to further troubleshoot.
+With EventProcessor, we can easily wait CallConnected event until the call is established. If the call was never established (that is, callee never picked up the phone), it throws Timeout Exception.  If the creation of the call otherwise fails, you will receive the `CallDisconnected` and `CreateCallFailed` events with error codes to further troubleshoot (see [this page](./../../resources/troubleshooting/voice-video-calling/troubleshooting-codes.md) for more information on Call Automation error codes).
 
 > [!NOTE]
 > If specific timeout was not given when waiting on EventProcessor, it will wait until its default timeout happens. The default timeout is 4 minutes.