L_TO_CREATE_TR Is used when you have a transfer requirement for which you need to create a transfer order.

APPEND VALUE #(
tbpos = ls_ltbp-btaps
anfme = lv_qta
altme = ls_ltbp-meins
vltyp = ls_ltbp-lgtyp
vlpla = -lgpla
) TO lt_trite.

 CALL FUNCTION 'L_TO_CREATE_TR'
   exporting
     I_LGNUM                        = <fs_outtab>-lgnum
     I_TBNUM                        = lv_tbnum
     i_squit                        = 'X'
     i_commit_work                  = 'X'
     i_bname                        = CONV ltak-bname( sy-uname )
     it_trite                       = lt_trite
   exceptions
     FOREIGN_LOCK                   = 1
     QM_RELEVANT                    = 2
     TR_COMPLETED                   = 3
     XFELD_WRONG                    = 4
     LDEST_WRONG                    = 5
     DRUKZ_WRONG                    = 6
     TR_WRONG                       = 7
     SQUIT_FORBIDDEN                = 8
     NO_TO_CREATED                  = 9
     UPDATE_WITHOUT_COMMIT          = 10
     NO_AUTHORITY                   = 11
     PREALLOCATED_STOCK             = 12
     PARTIAL_TRANSFER_REQ_FORBIDDEN = 13
     INPUT_ERROR                    = 14
     OTHERS                         = 15
   .
 if sy-subrc <> 0.

• message id sy-msgid type sy-msgty number sy-msgno
• with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  endif.