Solution : https://service.sap.com/sap/support/notes/523189 (SAP Service marketplace login required)
Summary : 
      This SAP Note provides comprehensive details on Support Package 21 for BW Release 2.1C, encompassing corrections, enhancements, and important guidelines for importing the package. It includes a list of related notes detailing specific fixes and improvements, subdivided into sections covering import considerations, errors post-import, specific error rectifications, and added enhancements. Notably, it advises referencing existing notes for deeper insights on appropriate patch levels, system prerequisites, and issues tied to outlying systems. The note also highlights the technological parity between this package and a previous release for context and clarification.
Key words : 
sap service marketplace distribution center, planned support package release dates, deleting psa requests includes, problematic persistent psa requests, psa table directly, perform special transports, source code part, rare cases due, -unique sequence numbers, warehouse management area
Related Notes : 
       
| 601024 | SAPBWNews BW 2.1C Support Package 28 | 
| 586630 | P30:P10: Automatic compression starts for incorrect cube | 
| 586013 | Request sporadically terminated with error RSAR 103 | 
| 585209 | Error when setting up X table/activating InfoObjects | 
| 584944 | Correction: No authorization check with traffic light | 
| 583166 | P29:P9:Aggr: Starting initial agg.filling takes a long time | 
| 582975 | RSAODS 122 when displaying/editing PSA contents | 
| 582456 | P9:P29: Too many appl. logs for AGGR1 | 
| 582261 | Display attribute displayed although not authorized | 
| 581419 | MSSQL:DUMP ITAB_DUPLICATE_KEY:LRSS1F17:on table RSREQDONE | 
| 581273 | Correction: router strings with a source system connection | 
| 581237 | Correction: poor performance when generating error requests | 
| 581132 | MultiCube, calculating "before the aggregation" -> non-paral | 
| 580777 | Aggregate structure leaves requests in the F table | 
| 580184 | D0 322: End of phase 002 *********************************** | 
| 580063 | Effect on aggregates of corrections to master data tables | 
| 579812 | Consulting:'Zombie' requests in the ODS/cube | 
| 579680 | It takes a long time to start the P9:P29:ODS activation | 
| 579493 | DB6: SAP_UPDATE_DBDIFF adds P indexes into the DBDIFF table | 
| 579325 | DATA_OFFSET_TOO_LARGE runtime error when characts. activated | 
| 579085 | Incorrect workbooks in SAP_BW_SUPPLY_CHAIN_PLANNER role | 
| 579022 | Finding and deleting inconsistent DataSources | 
| 578874 | Correction: Manual posting in QA without dialog | 
| 578413 | Correction: Not all DP in all cubes with flexible update | 
| 578379 | Analysis/Required infos for wrong values in BW Query Results | 
| 578337 | P29:P9:SDL:Saving/calling data from/with InfoPackage | 
| 578250 | Converting compounded characteristic values | 
| 577970 | Activating/deactivating enhanced DB optimizer features | 
| 577522 | Entries in /BI0/02... tables with seq_nr > 0 | 
| 577495 | READMODE indicator in table RSRHIEDIR_OLAP set incorrectly | 
| 577172 | P29:SDL:Dump SAPSQL_IN_ITAB_ILLEGAL_SIGN in QA with routine | 
| 576963 | Results rows moved with suppressed characteristic display | 
| 576334 | MDX: No data for hierarchy node variable | 
| 576295 | P9:P29:Content transfer:InfoAreas:memory problems | 
| 575814 | Enhancement to ALPHA conversion: runtime estimate | 
| 575747 | DROP_PARTITION ORACLE 14.083 when deleting ODS contents | 
| 575480 | Short dump GETWA_NOT_ASSIGNED SAPLRRK0 MEGA_SORT_M_12 | 
| 575285 | P9:P29:ODS:posting a PSA request into an updated ODS | 
| 574755 | F4 help for hierarchy nodes with time-dependent hierarchies | 
| 574540 | Problems with "Geo Data Download" in double-byte systems | 
| 574531 | P29:P8: yellow logs when you del. Init req. in source syst. | 
| 574477 | BAPI_ISOUCR_HI_T_GETLIST returns no text for hierarchy | 
| 574425 | P29:SDL:GETWA_NOT_ASSIGNED_RANGE dump w/ 3rd party InfoPack. | 
| 574382 | Text variable with automatic replacement not replaced | 
| 574026 | Request is sporadically terminated with error RSAR 103 | 
| 573714 | Hierarchy F4 does not fill hierarchy version | 
| 573619 | Test mode during alpha conversion deletes XY tables | 
| 573331 | P29:P8:SDL:Request delet. after loading from several cubes | 
| 573300 | Unable to select time-dependent hierarchy | 
| 572446 | Variable value is not valid (selection option variable) | 
| 571913 | P29:P8:PSA Deletion: Delet. requests directly in detail list | 
| 571715 | Filter value selection for values with " does not work | 
| 571701 | Possibility of incorrect data with queries with hierarchies | 
| 571690 | There is a gap in the authorization check | 
| 571449 | Hierarchy is displayed completely | 
| 571220 | X299 Brain SAPLRRK0; Form SELTYP_PFLEGEN-04- | 
| 571195 | P29:P8:SDL: Repeat request if delta also updates | 
| 570988 | Missing date conversion in the update; BW2.x | 
| 570880 | Dump with master data maintenance (where-used list) | 
| 570588 | P29:P8: Incorrect message RSM 681 for scheduled delta | 
| 570108 | RSRV: Status of data in InfoCubes | 
| 569726 | BLOCK_CHA_CHECK Correction | 
| 568181 | Query displays incorrect data (select option variable) | 
| 568122 | Hierarchy node variable in Web: incorrect time dependency | 
| 566541 | DB6: Displaying database tables | 
| 566044 | Loading master data: Using single record insert statement | 
| 565640 | SAPKU31002: Support Package 02 for CRM 3.1 | 
| 561987 | SAPKU30012: Support Package 12 for EBP 3.0/CRM 3.0 | 
| 537462 | Problems after PREPARE with upgrade to BW 3.0B | 
| 531726 | BW 2.1C: Information about Support Packages | 
| 522033 | Incorrect data in aggregate; partitioning/filling in blocks | 
| 510835 | Additional information on upgrading to BW 3.0B | 
| 500749 | Incorrect data in the aggregate (only SP21 / SP13) | 
| 498606 | Error during selective deletion from InfoCubes | 
| 486395 | Error during request deletion of F-fact table, 20BSP20-21CSP | 
| 484536 | Filling aggregates of large InfoCubes | 
| 483596 | DataMarts: Delta mode after terminated repeat | 
| 482064 | Timeout with master data deletion/where-used list | 
| 480338 | No query data for a BW2.0B/2.1C hierarchy (SP 21/13) | 
| 459635 | Missing dimension after aggregate was activated | 
| 459181 | Transferring without duplicate nodes BW2.0B/2.1C (SP 21/13) | 
| 458776 | No more locks when table data is deleted | 
| 456559 | SAPBWNews BW 2.1C Support Package 13 | 
| 456549 | SAPBWNews BW 2.0B Support Package 22 | 
| 447341 | values for ALPHA conversion routine | 
| 437118 | Authoriz. on formula attribute variable in formula elemnts | 
| 336259 | Patch dependencies 2.0B -> 2.1C |