Solution : https://service.sap.com/sap/support/notes/1373738 (SAP Service marketplace login required)
Key words :
database table swfrxiprc attribute acktype_sent, terms sll nfe reason, error result codes, referenced support package, complete logging enhancements, modeled send step, pi message persistency, attached correction instructions, respective acknowledgment messages, table swlfbashow
Related Notes :
| 1531912 | SAP EhP1 for XI on Netweaver 7.00 SP08 |
| 1530712 | NW04s XI Support Package Stack 23 |