Solution : https://service.sap.com/sap/support/notes/984520 (SAP Service marketplace login required)
Key words :
choose 'utilities' - 'test' - 'authorization test', system displays message solman_sap_backend 005, sap back end system, sap-oss rfc destination, sap-oss destination, 'sap-oss' destination, sap support portal, repeated incorrect logons, transaction os01/o02, rfc error code
Related Notes :
| 982045 | Error calling the SAP back-end system |