Solution : https://service.sap.com/sap/support/notes/514052 (SAP Service marketplace login required)
Key words :
HTTP adapter, HTTP/1.1, HTTP code 100
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 |