Solution : https://service.sap.com/sap/support/notes/624172 (SAP Service marketplace login required)
Key words :
existing purchasing group remains unchanged, system outputs message me083, back-end purchase order, back-end purchasing group, /3 back-end system, back-end system, modules necessarily require, /3 purchase order item, -mentioned system combination, default purchasing group
Related Notes :
| 913831 | SRM 5.0: BBP_PD 540 blocks ECS with back-end POrgs |
| 636974 | ECS determntn of Backend orgnztnl data in extended transfer |
| 618400 | Support Package 01 for SRM 3.0 |