2552503 - GETWA_NOT_ASSIGNED on MPOS

Consistency check report /SAPAPO/TS_LCM_CONS_CHECK or /SAPAPO/TS_PSTRU_TOOL dumps with GETWA_NOT_ASSIGNED.
The dump happened in method GET_PLOBS_POST in a generated class program, at coding similar to below.

|   22|*&---------------------------------------------------------------------*                   |   23|*& (2) Post processing of planning objects                                               |   24|*&---------------------------------------------------------------------*                  |   25|                                                                                          |   26|*#TR# (2.1) Determine used aggregate (if LV_USED_AGGREGATE is initial, we read from the basi|   27|    IF iv_used_aggregate IS NOT INITIAL.                                                    |   28|      mo_scmb_pstru_relation->get_aggregates(                                               |   29|        EXPORTING                                                                           |   30|          iv_bas_plobid      = gc_plobid                                                    |   31|        IMPORTING                                                                           |   32|          et_plobid          = lt_plobid                                                    |   33|            ).                                                                              |   34|                                                                                            |   35|      APPEND gc_plobid TO lt_plobid.                                                        |   36|                                                                                            |   37|      mo_scmb_pstru->retrieve(                                                              |   38|        EXPORTING                                                                           |   39|          it_plobid        = lt_plobid                                                      |   40|        IMPORTING                                                                           |   41|          et_plobko        = lt_plobko                                                      |   42|            ).                                                                              |   43|                                                                                            |   44|      READ TABLE lt_plobko WITH KEY ancid = iv_used_aggregate ASSIGNING <ls_plobko>.        |   45|      ASSERT ID /sapapo/scmb_pstru_plob CONDITION sy-subrc = 0.                             |   46|      ev_used_pstru = <ls_plobko>-plobid.                                                   |>>>>>|    ELSE.                                                                                  |   48|      ev_used_pstru = gc_plobid.                                                            |   49|    ENDIF.                                          

• SAP Supply Chain Management (SCM)
• Advanced Planning and Optimization (APO)
• SAP enhancement package for SAP Supply Chain Management
• SAP Supply Chain Managment Demand Planning (SCM-APO-FCS)  

Fixed Aggregate , KBA , SCM-APO-FCS-BF , Basic Functions , Problem