AWS Connect With Salesforce Issue

Question

Hi,
I am trying to integrate Salesforce with an AWS Connect instance, and currently, I am exploring the features of Salesforce CTI Adapter integration with Amazon Connect Workshop. I faced many difficulties connecting our salesforce with Amazon Connect during the process. 
While working with Lambda in Amazon Connect, I had an issue with the region in the URL. When I open the Amazon Connect URL in the instance, it was showing US-EAST-2, but when I navigate to the Lambda URL, it is showing AP-NORTHEAST-1. While integrating it with the Salesforce instance, I have to mention the region in which I was working, so when I enter AP-NORTHEAST-1 in the named credential in Salesforce, I am getting the below error.
Error(s):
allowlistUrls - {"message": "Credential should be scoped to a valid region. "}
See the developer console(s) for more details.
And when I enter US-EAST-2 in the named credential, I am getting the below error.
Error(s):
allowlistUrls - {"message": "Credential should be scoped to a valid region. "}
See the developer console(s) for more details.

If anyone has faced the same errors and resolved it kindly share your inputs.

Thanks,
Nagaratna Goudappa

Answer

Check the CloudFormation template outputs on the region that the resources are created in.  if all of them are ap-northeast-1.  Then somewhere prior you either picked the wrong region or you are in the wrong region after logging into AWS Console.

You could delete the Cloudformation template for Lambda and try again.  But I would carefully go through the steps again and check your region while you are in AWS console for various steps that requires it.

Like:  https://amazon-connect.github.io/amazon-connect-salesforce-cti/docs/classic/installation/01-installation#setting-up-the-executeawsservice-named-credential
step 8, make sure you input the right region there.

https://amazon-connect.github.io/amazon-connect-salesforce-cti/docs/classic/installation/02-guided-setup#setting-up-the-secretsmanager-secret
step 2, when checking if your AWS Console is using the right region

The end result when launching the CLoudformation to create resources should be in the region you desire

Answer

I will need more information about your deployment, and what exactly you have configured for the Salesforce CTI Adapter, as well as its version.
In principle, if you want to invoke a Lambda from a different region or account, in the Invoke AWS Lambda function contact flow bloc, under Select a function, you can enter the ARN of a Lambda. Then set up the corresponding resource-based policy on that Lambda to allow the flow to call it. https://docs.aws.amazon.com/connect/latest/adminguide/connect-lambda-functions.html
Installing the CTI Adapter using the guides setup or following the deployment guide should not give you any mismatches in regions.
Since I have no additional information about why your lambda is in a different region, I am adding here some links to documentation that I hope may be clarifying some of the things you see in your deployment: https://github.com/amazon-connect/amazon-connect-salesforce-cti/blob/main/docs/lightning/02-installation/04-salesforce-lambdas-manual-setup.md

AWS Connect With Salesforce Issue

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