Already in production but can't use sms voice v2 api

I cannot find documentation on this error either and I have the same issue. I'm using pinpoint voice service in us-east-1 region. I'm using sample python code published here: https://docs.aws.amazon.com/pinpoint/latest/developerguide/sms-voice-v2-messages.html#sms-voice-v2-messages-voice This is my error message: An error occurred (ValidationException) when calling the SendVoiceMessage operation: Validation Error Occurred - Reason="INVALID_IDENTITY_FOR_DESTINATION_COUNTRY" Fields="destinationPhoneNumber" if my OriginationIdentity (phone number) country matches destinationPhoneNumber country, then I don't get this error and my voice message gets sent successfully. If my OriginationIdentity number country doesn't match destinationPhoneNumber, I get the INVALID_IDENTITY_FOR_DESTINATION_COUNTRY error. From this menu: https://us-east-1.console.aws.amazon.com/pinpoint/home?region=us-east-1#/sms-account-settings/phoneNumbers I can only request a phone number from a list of only 32 countries. There are 195 countries (according to https://www.worldometers.info/geography/how-many-countries-are-there-in-the-world/ ) - the countries that I need to send voice messages to are not on the list (e.g. Thailand, Pakistan, Belize, Cameroon, etc.) This PinPoint pricing page has a per minute price for every country in the world https://aws.amazon.com/pinpoint/pricing/
The AWS support team should publish documentation on the restriction rules of OriginationIdentity, which countries can it call?