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sunil_mani
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Introduction

I am Sunil Mani. I have total 10 years of technical experience in SAP . In this blog post, I will be sharing my personal experience to do screen enhancement in /SCWM/TU transaction. Reason behind this screen enhancement is, in Standard SAP, I didn't have an option to customize TU screen to add buttons on application toolbar. In order to overcome this problem, I have implemented the following solution as explained in this blog post.

Solution

As I highlighted in screenshot below, I had a requirement to enhance TU screen with a custom button( Print HU Label). When I click on Print HU Label button, it should pull all the Handling Units assigned to the TU and generate a spool for each item in the Handling Unit.


Please follow the below steps -

The first step to display above highlighted print icon/button when I enter into /SCWM/TU transaction , I had put the below logic in the Method SET_PROCESS_1 and Class lcl_transaction_manager . I created an implicit enhancement at the end of the method and set global variable MT_OIP_DEFINITION with new button details as illustrated below.


FIELD-SYMBOLS: <lfs_oip_hu> TYPE ly_s_oip_definition.
TRY.
<lfs_oip_hu> = mt_oip_definition[ def-v_container = 'CONTAINER_ALV_OIP_1' def-v_class_id = 'OIP_TAB1' ].
* separator
CLEAR ls_button. "Already defined in standard
ls_button-butn_type = cntb_btype_sep.
APPEND ls_button to <lfs_oip_hu>-def-s_toolbar-t_buttons.
* print button
CLEAR ls_button.
ls_button-function = 'OK_PRINT_HU'.
ls_button-butn_type = cntb_btype_button.
ls_button-text = ''.
ls_button-quickinfo = 'Print HU'.
ls_button-icon = icon_print.
APPEND ls_button to <lfs_oip_hu>-def-s_toolbar-t_buttons.
CATCH CX_SY_ITAB_LINE_NOT_FOUND.
ENDTRY.

Register OK code to the standard controller in the METHOD constructorCLASS lcl_oip, Include /SCWM/LUI_TUOIP. Again, I created an implicit enhancement and registered the action code for Print button.
*Register HU print ok code at the controller
DATA: lo_temp TYPE REF TO /scmb/if_controller.
lo_temp = me.
IF lo_temp->mv_class_id = 'OIP_TAB1'.
CLEAR: lt_okcodes.
APPEND 'OK_PRINT_HU' TO lt_okcodes.
lo_temp->mv_class_id = 'ZHU_PRINT'.
*Register the viewer at the controller
so_controller->viewer_register(
io_viewer = lo_temp
it_okcodes = lt_okcodes ).
lo_temp->mv_class_id = 'OIP_TAB1'.
ENDIF.

In the same include, Method /scmb/if_controller~okcode_handler and  CLASS lcl_oip to handle the logic behind our custom button. I created an implicit enhancement and got related TU details and called my custom function module to print hu label.
  DATA: lt_asp_tu         TYPE /scwm/tt_asp_tu,
lv_failed TYPE abap_bool,
ls_asp_tu TYPE /scwm/s_asp_tu.

DATA: lo_tudlv_manager TYPE REF TO /scwm/cl_sr_tudlv,
ls_tu_act_key TYPE /scwm/s_tu_sr_act_num,
lt_bo_tu_hu TYPE /scwm/tt_bo_tu_dlv_no_sort,
ls_bo_tu_hu TYPE /scwm/s_bo_tu_dlv.

Case IV_OKCODE
*Determine the selected line(s)
CALL METHOD get_selected_lines
EXPORTING
iv_suppress_message = abap_true
iv_no_select = abap_true
IMPORTING
et_aspect = lt_asp_tu
ev_failed = lv_failed.
IF lt_asp_tu[] IS INITIAL OR lv_failed = abap_true.
*add error message if no entry is selected
ls_message-msgty = 'E'.
ls_message-msgid = '/SCWM/UI'.
ls_message-msgno = '003'.
go_message_handler->add_system_message(
EXPORTING msg = ls_message ).
ELSE.

LOOP AT lt_asp_tu INTO ls_asp_tu.
*get all assigned HUs
lo_tudlv_manager = /scwm/cl_sr_tudlv=>get_instance( ).
ls_tu_act_key-tu_num = ls_asp_tu-tu_num.
ls_tu_act_key-tu_sr_act_num = ls_asp_tu-tu_sr_act_num.
lo_tudlv_manager->get_bo_tu_dlv(
EXPORTING
is_tu_act_key = ls_tu_act_key
iv_one_record_per_hu = abap_false
IMPORTING
et_bo_tu_hu = lt_bo_tu_hu ).

******
Own custom Logic based on a requirement
*******
ENDIF.
ENDCASE.

Conclusion

As we don't have any standard screen enhancement to add a custom solution. I implemented above solution and overcame the standard restriction to customize TU transaction.

Thanks for reading !

Thanks

Sunil Mani
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