ocr: TP Vendor API APPC API Notes SEND. DATA SEND. DATA [1,2] RC= OK RC= OK SEND. DATA SYNCPI PS_ HDR (Prepare) [3,4] RC: = OK RECEIVE AND. WAIT [5] RC=OK PS_HDR (Request Commit) [6] RECEIVE AND. WAIT RC == OK what revd == AP_SEND [7] SEND. DATA PS_ HDR (Committed) [8] RC= OK RECEIVE AND. WAIT RC: == OK PS_HDR (Forget) [9] RECEIVE AND. WAIT RC == OK RC=OK what revd = AP _SEND [10,11]