Solution : https://service.sap.com/sap/support/notes/788775 (SAP Service marketplace login required)
Key words :
delete user names, symptom trex services, terms trex services, named 'principle group', super user account, super user, trex group, /trex start, trex server, installed trex 6
Related Notes :
| 811774 | Update to TREX 6.1 SP11 |
| 808441 | Update to TREX 6.1 SP10 Patch 1 |
| 766197 | Installing TREX 6.1 SR1 (based on SPS9 binaries) |