Solution : https://service.sap.com/sap/support/notes/504892 (SAP Service marketplace login required)
Key words : 
activated extended transfer control, terms extended transfer control, issuing error message tr067, extended transfer control, error message tr067, enhanced transfer control, error message tk658, symptom problems occur, act_<rel> phase, system switch upgrade
Related Notes : 
       
| 775047 | Add. info. on upgrading to SAP Web AS 6.40 SR1 | 
| 661640 | Add. info. on upgrading to SAP Web AS 6.40 | 
| 484876 | Additional information about upgrading to SAP Web AS 6.20 | 
| 401717 | Additional info on upgrading to SAP Web AS 6.10 (Basis) |