Solution : https://service.sap.com/sap/support/notes/688692 (SAP Service marketplace login required)
Key words :
older support package levels, 0b import support package 18, 1c import support package 12, cl_rsra_kwf_page abap class, 0b support package 18, 1 content support package 12, current support package, bw support packages, support package, 0b patch 18
Related Notes :
| 647747 | SAPBWNews BW 3.0B Support Package 18 |
| 601038 | SAPBWNews BW 3.1 Content Support Package 12 |