Amazon Connect Create Callback Error from Sample Queue Configurations Flow

Question

Hello AWS Community,
I just created my instance and, getting a test inbound call through the out of the box "Sample Queue Configurations Flow" and choosing the option to be called back, I enter my phone number, hear the prompt "You will be called back ..."  but then I hear, "Something went wrong" error prompt for the Transfer to Queue block.
I tried creating a separated queue for Callback and then use that on the Transfer to Queue block, but no luck, it's the same behavior. On the Cloudwatch logs I just see a generic error, nothing specific.
{
    "Results": "Error",
    "ContactId": "de890f82-f415-4a29-8b05-xxxxxxx",
    "ContactFlowId": "arn:aws:connect:us-east-1:xxxxxx:instance/da5b3216-194c-45e1-a814-xxxxxx/contact-flow/e9d60d7f-64c4-4f43-8b92-xxxxxxxx",
    "ContactFlowName": "Sample interruptible queue flow with callback",
    "ContactFlowModuleType": "CreateCallback",
    "Timestamp": "2023-06-27T02:08:43.634Z",
    "Parameters": {
        "InitialDelaySeconds": "5",
        "CustomerPhoneNumber": "+1XXXXXXXXXX",
        "MaxRetryAttempts": "1",
        "RetryDelaySeconds": "600"
    }
}

Since this is pretty basic built-in flow and not working from the start, I have no idea what could possibly be missing.
Any advice is appreciated, thank you in advance

Answer

This might be related to the fact that your instance does not have permissions to make outbound calls to certain destinations(despite checking the box while creating the instance). You might need to contact AWS support and ask them to check this. There is no way for you to check this from your side.

Amazon Connect Create Callback Error from Sample Queue Configurations Flow

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