BAPI_ROUTING_CREATE creates routing but no operations, without any errormsg

Question

Hi Seniors,
I have following problem. I have to create a new routing from an existing routing.
So far it sounds easy, and it even works for the routing itself.
But whaever i export to the BAPI it wont create any Operations.
What i do is:
Reading the headdata of the existing routing.
Mapping the headdata to the BAPI-structure which i export to the function.
Reading the positiondata (operations) of the routing.
Mapping the positiondata to the BAPI-structure which i export to the function.
The real problem is that in the return table for the error-messages of the BAPI is only one record. This record is of the type state and tells me that the routing has been created sucessfully.
I have been searching this forum for quite some time to get an answer to this question, but failed.
It seems there are quite a LOT of people not knowing exactly how to use this function, since this question is widely spread throughout the forums.
BUT in most of the cases there is NO answer or well something not too useful.
Here comes my code example for those who want to have a closer look:
DATA:        c_matnr          TYPE mara_matnr,
                  wa_plpo          TYPE plpo,
                  lt_plpo          TYPE TABLE OF plpo,
                  wa_plko          TYPE plko,
                  wa_mapl          TYPE mapl,
                  lt_mapl          TYPE TABLE OF mapl,
                  wa_cukn          TYPE cukn,
                  wa_modify        TYPE yic_gs_mod,
                  lt_modify        TYPE yic_gs_mod,
                  wa_bapiplko      TYPE bapi1012_tsk_c,
                  lt_bapiplko      TYPE TABLE OF bapi1012_tsk_c,
                  wa_bapiplpo      TYPE bapi1012_opr_c,
                  lt_bapiplpo      TYPE TABLE OF bapi1012_opr_c,
                  wa_bapireturn    TYPE bapiret2,
                  lt_bapireturn    TYPE yic_tt_return,
                  wa_bapiplfl      TYPE bapi1012_seq_c,
                  lt_bapiplfl      TYPE TABLE OF bapi1012_seq_c,
                  wa_plfl          TYPE plfl,
                  lt_plfl          TYPE TABLE OF plfl.
  DATA:       lv_swap(60)      TYPE c,
                  lv_ix(6)         TYPE n,
                  lv_sttag         TYPE char10,
                  lv_flag          TYPE xfeld,
                  lv_mflag         TYPE xfeld,
                  lv_plnty         TYPE plko-plnty,
                  lv_plnnr         TYPE plko-plnnr,
                  lv_knnum         TYPE cukc-knnum,
                  lv_group         TYPE plko-plnnr,
                  lv_groupcounter  TYPE plko-plnal,
                  lv_subrc         TYPE syst-subrc.
  FIELD-SYMBOLS:        TYPE ANY.
  PERFORM get_headdata                "just a simple select hiding behind this
                  USING     i_plnty
                            i_plnnr
                  CHANGING  wa_plko
                            lv_subrc.
  PERFORM get_posdata                  "just a simple select hiding behind this
                  TABLES    lt_plpo
                  USING     i_plnty
                            i_plnnr
                  CHANGING  lv_subrc.
  SELECT *
  FROM   mapl
  INTO   TABLE   lt_mapl
  WHERE  plnty = i_plnty
  AND    plnnr = i_plnnr.
    Mappen der Arbeitsplankopfdaten in die BAPI-Struktur.
      wa_bapiplko-change_no                     = wa_plko-aennr.
      wa_bapiplko-valid_from                    = wa_plko-datuv.
      wa_bapiplko-del_ind                       = wa_plko-loekz.
      wa_bapiplko-task_list_usage               = wa_plko-verwe.
      wa_bapiplko-plant                         = wa_plko-werks.
      wa_bapiplko-task_list_status              = wa_plko-statu.
      wa_bapiplko-task_measure_unit             = wa_plko-plnme.
      wa_bapiplko-lot_size_from                 = wa_plko-losvn.
      wa_bapiplko-lot_size_to                   = wa_plko-losbs.
      wa_bapiplko-resp_planner_group            = wa_plko-vagrp.
      wa_bapiplko-description                   = wa_plko-ktext.
      wa_bapiplko-old_number_of_task_list       = wa_plko-plnnr_alt.
      wa_bapiplko-recalc_std_values             = wa_plko-flg_capo.
      wa_bapiplko-dyn_modif_level               = wa_plko-qdynhead.
      wa_bapiplko-dyn_modif_rule                = wa_plko-qdynregel.
      wa_bapiplko-sample_drawing_procedure      = wa_plko-qprziehver.
      wa_bapiplko-ind_units_ext_numbering       = wa_plko-extnum.
      wa_bapiplko-ident_key                     = wa_plko-slwbez.
      wa_bapiplko-insppoint_partiallot_assgnmt  = wa_plko-ppkztlzu.
      wa_bapiplko-change_rule                   = wa_plko-chrule.
      wa_bapiplko-object_change_type            = wa_plko-ccoaa.
      APPEND wa_bapiplko TO lt_bapiplko.
    Mappen der Vorgänge (Arbeitsplanpositionsdaten) in die BAPI-Struktur
      LOOP AT lt_plpo INTO wa_plpo.
        lv_ix = sy-tabix.
        CALL FUNCTION 'MAP2E_PLPO_TO_BAPI1012_OPR_C'
          EXPORTING
            plpo                         = wa_plpo
          CHANGING
            bapi1012_opr_c               = wa_bapiplpo
          EXCEPTIONS
            error_converting_curr_amount = 1
            OTHERS                       = 2.
        IF sy-subrc <> 0.
          e_subrc = sy-subrc.
          rfc_exception lc_cant_map_to_bapi_structure.
        ENDIF.
        wa_bapiplpo-sequence_no = 0.
        wa_bapiplpo-work_cntr = ''.
        CONCATENATE 'VG' lv_ix INTO lv_swap.
        wa_bapiplpo-operation_id = lv_swap.
        APPEND wa_bapiplpo TO lt_bapiplpo.
      ENDLOOP.
    BAPI-Aufruf: lege Arbeitsplan an, mit untergeordneten Objekten
      CALL FUNCTION 'BAPI_ROUTING_CREATE'
        IMPORTING
          group             = lv_group
          groupcounter  = lv_groupcounter
        TABLES
          task               = lt_bapiplko
          operation        = lt_bapiplpo
          return             = lt_bapireturn.

Answer 1

When you are sending the operation details, the sequence no should be masked to the length of the field.
for example: Sequence no = 0.
it should be masked as '000000'.