Fix CallingCommunicationError

✅ Solution

CallingCommunicationError in Azure API Management usually indicates a problem with communication between the API Management gateway and the backend service, often due to network misconfiguration or policy settings. To fix this, verify the backend service is reachable from the API Management instance, checking DNS resolution, network security group rules, and firewall settings; also, carefully review and correct any API Management policies (like `rewrite-uri` or `set-backend-service`) which may be causing incorrect routing or transformations leading to communication failures.