I checked and that one AC table that we have already reviewed that had no Application ACK row is the only one that seems to be missing a row
I did a little bit more exploration with regard to acknowledgment choreography.
I collected all of the messages that are used as application acks. I then removed those that look like the general ack message, which should leave only messages that could be sending back information (i.e. response messages). I then checked all of those response messages to see which ones specified the possibility of responding to said response message with an application ack in enhanced mode. I can't guarantee that my scripts are perfect but here's what I got: Only Ch. 13 appears to have response messages that you may send an application ack to in enhanced mode. They are all sending general ack messages as application acks.
13 - EAR^U08^EAR_U08: Equipment Command Message --> ["ACK^U08^ACK: General Acknowledgment"]
13 - ESU^U01^ESU_U01: Equipment Status Message --> ["ACK^U01^ACK: General Acknowledgement"]
13 - INU^U05^INU_U05: Inventory Update Message --> ["ACK^U05^ACK: General Acknowledgment"]
13 - LSU^U12^LSU_U12: Equipment Log/Service Message --> ["ACK^U12^ACK: General Acknowledgment"]
13 - SSU^U03^SSU_U03: Specimen Status Message --> ["ACK^U03^ACK: General Acknowledgment"]
13 - TCU^U10^TCU_U10: Test Code Settings Update --> ["ACK^U10^ACK: General Acknowledgment"]
These Ch.13 messages also specify the sending of an application ack in original mode. I think that there is only one other response message that specifies an application ack in original mode. It is ORA^R41^ORA_R41 in Ch. 7,
checked all messages that are ever sent as application ACKs and are requesting application ACKs back
What are the cases in which response message specifies, when you can send application ACK to Application ACK?
Send to InM and Ulrike Merrick to ask Ralf Herzog what he thinks about that