SendMessageRequest
This type is used by the request payload for the Inquiry and Return 'send message' methods.
Calls that use SendMessageRequest:
/post-order/v2/inquiry/{inquiryId}/send_message POST, /post-order/v2/return/{returnId}/send_message POST
Field
This container is used to input the text that comprises the message being sent to the order partner.
See the Field Index to learn which calls use message.