Solution : https://service.sap.com/sap/support/notes/855184 (SAP Service marketplace login required)
Key words : 
function module specifies values forat, sapbwnews bw sp13 netweaver'04 stack 13, fill customer exit variables, multi-dimensional authorization concept, 0b            import support package 28, 10 content            import support package 22, terms customer exit, multi-dimensional reason, rssb_get_auths_filtered function module, relevant authorization object
Related Notes : 
       
| 783254 | SAPBWNews BW Support Package 13 NW'04 Stack 13 RIN | 
| 783252 | SAPBWNews BW 3.1 Content Support Package 22 | 
| 783170 | SAPBWNews BW 3.0B Support Package 28 | 
| 770477 | RSSB_GET_AUTHS_FILTERED: No authorization | 
| 653383 | Filling of variables with multi-dimensional authorizations |