Solution : https://service.sap.com/sap/support/notes/1520543 (SAP Service marketplace login required)
Key words : 
rule resoltuion takes place, empty container elements, workflow container elements, empty container element, workflow rule resolution, workflow container element, workflow container, rule resolution, element 'user', terms pfac
Related Notes : 
       
| 1041016 | Workflow setup in new installations for BRM |