2017: Operation not supported on this chat's service type

This operation is not supported on the chat’s service type. This is an HTTP 409 error. Location requests, for example, only work in iMessage chats — not SMS or RCS. The message field names the service the operation requires.

• Check service on the chat before calling, and retry on a chat whose service supports the operation
• A chat’s service is decided at send time by what the recipient can receive — see the Protocol Selection guide

• Location Sharing
• Protocol Selection
• Error Codes