Solution : https://service.sap.com/sap/support/notes/727839 (SAP Service marketplace login required)
Key words : 
-> sap netweaver -> sap web application server -> sap netweaver components -> sap web application server -> security, /securityguide -> sap supply chain management -> sap supply chain management security guide, sap scm security guide, -> role maintenance -> role maintenance functions, sap components -> maintaining authorizations, sap scm - sap dimp integration, /3 /sap dimp integration background users, sap standard authorization role, sap scm - sap, sap scm -sap
Related Notes : 
       
| 1460357 | AG023: Error in 'BAPI_APOATP_CHECK': Screen output w/o con. | 
| 851122 | Security Guide: Discrete Industries and Mill Products | 
| 700659 | Security Guide: mySAP Supply Chain Management |