Solution : https://service.sap.com/sap/support/notes/1161922 (SAP Service marketplace login required)
Key words :
read file usr/sap/trans/sapnames/<username>, system issues message pu 807, relevant support package, system checked, terms pu824, s_dataset reason, program error, incorrect activity, write data, note assistant
Related Notes :
| 816523 | Termination when a user logs on: "No authorization" |