Solution : https://service.sap.com/sap/support/notes/1226964 (SAP Service marketplace login required)
Key words :
versioncl_rsds_rsds_vers -> emulate_from_os reason, symptom occurs due, user interface, hierarchy type, active version, revised version, display emulated 3, <source system>, source system, idoc transfer
Related Notes :
| 1142143 | 3.x DataSource: "A" version for hierarchy without intervals |
| 997739 | You cannot edit a 3.x DataSource directly |
| 936668 | Transformation: DataSource does not exist |
| 936644 | 3.x DataSource:No active version displayed in UI (emulation) |