Solution : https://service.sap.com/sap/support/notes/1634458 (SAP Service marketplace login required)
Key words : 
prelimenary version sapbwnews nw bw 7, personal data  ->  e-mail, generating unwanted/invalid authorizations, sapbwnews nw bw 7, e-mail address, sap nw bw7, data store objects, sap netweaver bw 7, 01 bw abap sp11, 30 bw abap sp06
Related Notes : 
       
| 1636563 | RSEC 730: Generated Auths Inactive without Text fields. | 
| 1630954 | SAPBWNews NW BW 7.31 ABAP SP2 | 
| 1628054 | SAPBWNews NW BW 7.30 ABAP SP6 | 
| 1600222 | SAPBWNews NW7.0 BW ABAP SP28 | 
| 1052242 | BI Analysis authorization: Generation |