3506193 - Activation of transformation get dump in "GET_UNIT_STEP"

Transformation activation get dump:

Category               ABAP programming error
Runtime Errors         MESSAGE_TYPE_X
ABAP Program           CL_RSTRAN_TRFN_RULE===========CP

 "MESSAGE_TYPE_X"
   "CL_RSTRAN_TRFN_RULE===========CP" bzw. CL_RSTRAN_TRFN_RULE===========CM01K
   "GET_UNIT_STEP"

  194   IF l_fix_target = rs_c_false.
  195 * find direct move step for unit
  196     l_count = 1.
  197     LOOP AT p_t_mapping ASSIGNING <fs_map>
  198       WHERE targetposit = e_s_unit-s_assigned_field-posit
  199         AND targetsegid = e_s_unit-s_assigned_field-segid.
  200       IF l_count > 1.
>>>>>         MESSAGE x000(rstran).                               "#EC *
  202       ENDIF.

16 METHOD       CL_RSTRAN_TRFN_RULE===========CP    CL_RSTRAN_TRFN_RULE===========CM01K   201
      CL_RSTRAN_TRFN_RULE=>GET_UNIT_STEP
   15 METHOD       CL_RSTRAN_TRFN_RULE===========CP    CL_RSTRAN_TRFN_RULE===========CM003   630
      CL_RSTRAN_TRFN_RULE=>CHECK_ME
   14 METHOD       CL_RSTRAN_TRFN_VERS===========CP    CL_RSTRAN_TRFN_VERS===========CM00V   120
      CL_RSTRAN_TRFN_VERS=>CHECK_ME
   13 METHOD       CL_RSTRAN_TRFN================CP    CL_RSTRAN_TRFN================CM02D    14
      CL_RSTRAN_TRFN=>CHECK_ME

• SAP BW/4HANA 2.0

Transformation, activate, dump, error, short, MESSAGE_TYPE_X, CL_RSTRAN_TRFN_RULE===========CP, CL_RSTRAN_TRFN_RULE, CL_RSTRAN_TRFN_RULE===========CM01K, GET_UNIT_STEP, flag, rules, rule, LOOKUP. , KBA , BW4-DM-TRFN , SAP HANA execution in Transformation and DTP , How To