Salesforce Service Cloud Voice Outbound Call Exception “We can’t complete the call. Check the phone number and try again.” occurs when the Queue’s Outbound caller ID number and Outbound whisper flow in Amazon Connect is not configured.

To fix the Salesforce Service Cloud Voice Outbound Call Exception “We can’t complete the call. Check the phone number and try again.”, configure the Outbound caller ID number and Outbound whisper flow in Amazon Connect.

Outbound caller ID number and Outbound whisper flow Configuration in Amazon Connect: