63035: This operation is blocked because the RCS agent has not launched, the recipient has not accepted the invitation to become a tester, or the RCS sender only works in certain regions.

This operation is blocked because the RCS sender has not launched and the recipient has not been invited and accepted the invitation to become a tester. This may also happen if you are attempting to send to a device with a country code from a region that is not supported by that sender.

Device is not RCS capable, recipient has not accepted to become a tester, or device is not reachable from the RCS sender.

If device is RCS capable, accept invitation to become a tester. If the device has already accepted the invitation, please confirm that you are not attempting to send from an RCS sender that is regionally restricted.