SIP Trunk Validation Failure with Terraform 1.65.0

Can anyone clarify the validation logic for genesyscloud_sip_trunk_connection? Provider version 1.65.0. Deploying a SIP trunk with specific codec preferences. Apply fails with 400 Bad Request. Error: “Invalid codec configuration for media region ap-southeast-2”.

  • Verified codec support via direct API call; payload is valid.
  • Attempted removing optional codec overrides; error persists.

Terraform state shows no drift. Any known constraints for this region?