Solution : https://service.sap.com/sap/support/notes/414723 (SAP Service marketplace login required)
Key words : 
perform_not_found form set_epsn appears, importing correcting errors, -cumulative key figures, bw patches solution, symptom support package 20, 0b support package 20, 1c support package 12, support package corrects, loading transaction data, inconsistent data occur
Related Notes : 
       
| 531700 | BW 2.0B: Information for Support Packages | 
| 460455 | PERFORM_NOT_FOUND dump (PERFORM SET_EPSN) | 
| 456979 | |
| 456535 | |
| 456505 | SP21:SP3:SDL:Empty Sign/Option fields with selection | 
| 456408 | |
| 456366 | Error when deleting master data (where-used list) | 
| 456116 | |
| 455537 | |
| 455122 | X299 Brain SAPLRRI2; Form KFB_FUELLEN_VAR-01- or ... -02- | 
| 454627 | Expanding up to level..., no value display | 
| 454543 | Inconsistent index names in the BW System with Informix DB | 
| 454436 | PSA: Field contents for currencies are changed | 
| 454192 | P20:P3:SDL: System cannot be changed and saving InfoPack/IPG | 
| 454073 | Text field: Relevance of the data | 
| 453469 | Changing a characteristic results in syntax error in RSRV | 
| 453164 | SP20:SP3:IPG: Starting successor package start with 'Only PS | 
| 452701 | Background print: Termination when storing in archive-link | 
| 452347 | Terminatn MOVE_TO_LIT_NOTALLOWED_NODATA during query executn | 
| 452247 | Alpha conversion for update rules | 
| 451809 | SP20:SP3:Error handling in SDL accidently active | 
| 451468 | |
| 451037 | P20:P3:IPG:Delay time and testing for InfoPackages in group | 
| 450912 | |
| 450592 | P20:P3:IPG: Timeout is calculated only at the beginning | 
| 450567 | Reading master data with time-dependent attributes | 
| 450439 | |
| 450303 | P20:P3:SDL:Selection with type 0; 0 is replaced by space | 
| 450213 | |
| 450195 | |
| 449968 | Time-dependent hierarchy filter values -> wrong value displa | 
| 449966 | Text variables are not replaced | 
| 449665 | |
| 449371 | X299 Brain SAPLRRK0; mega_sort_m_06-02- or mega_sort_m_07- | 
| 449304 | Shifted total cells in Web Reporting | 
| 448876 | RSRV: Repairing number range objects of dimensions | 
| 447922 | Despite entering unique value: Text variable not replaced | 
| 447736 | Display of currencies and units in Web Reporting | 
| 447412 | |
| 447366 | |
| 446882 | Web: Performance improvement and browser compatibility | 
| 446472 | Export of InfoObjects terminates with return code 200 | 
| 445613 | Fiscal year variant not found | 
| 443760 | Euro conversion: No restart after termination | 
| 415727 | APO Support Package 13 for APO Release 3.0A | 
| 315094 | Recommendations for authoriz. in BW Reporting | 
| 147218 | SAP APO Demand Planning - datamart ==> BW patches |