I am using WM 9.6 and have having a problem with models for a particular partner.
All the PIPS are correctly recognized and send/received ,but not ACK ReceiptAcknowledgement (RNIF 1.1).
Whenever send/wait for ACK step comes ,we receive the ack ,but goes as unkown for doc id.sender/recceiver.
As it happens for all models for a particular partner - this points to be some setting issue with TPA .
Anybody with similar issue faced before ?