| Level | Code | Display | Definition |
| 1 | AA | Application Acknowledgement Accept |
Receiving application successfully processed message.
|
| 1 | AE | Application Acknowledgement Error |
Receiving application found error in processing message. Sending error response with additional error detail information.
|
| 1 | AR | Application Acknowledgement Reject |
Receiving application failed to process message for reason unrelated to content or format. Original message sender must decide on whether to automatically send message again.
|
| 1 | CA | Accept Acknowledgement Commit Accept |
Receiving message handling service accepts responsibility for passing message onto receiving application.
|
| 1 | CE | Accept Acknowledgement Commit Error |
Receiving message handling service cannot accept message for any other reason (e.g. message sequence number, etc.).
|
| 1 | CR | Accept Acknowledgement Commit Reject |
Receiving message handling service rejects message if interaction identifier, version or processing mode is incompatible with known receiving application role information.
|