Solution : https://service.sap.com/sap/support/notes/514052 (SAP Service marketplace login required)
Key words :
outbound plain http adapter, plain http adapter, terms http adapter, http log http/1, http return code 100, http code 100 reason, http server processed, integration server, incorrectly interpreted, message object
Related Notes :
619598 | Support Package 07 for SRM 2.0 |
594640 | Support Package 06 for SRM 2.0 |
547725 | Support Package 03 for SRM 2.0 |