messageId | String The message ID of the acknowledgement. Specify the message ID of the envelope you are acknowledging. |
recipientId | String The recipient of the acknowledgment. Specify the sender ID of the envelope you are acknowledging. |
correlationId | String The correlation ID of the acknowledgment. Specify the correlation ID of the envelope you are acknowledging. |
senderId (optional) | String The sender of the acknowledgement. If you do not specify this parameter, the service uses your MarketSite TPID. |
replyEnvelope | Reply envelope that contains the custom acknowledgement. |