ITC Server

SAP ECC 6.0 - SAP_BASIS 700

I wrote a new method GET_HANDLING_UNIT for ZCL_PCC_SD_DELIVERY class. Basically it gets the handling unit numbers for the delivery. I have used HU_GET_HUS function module inside the method; after investigation how handling units tracking data is selected in function module XSI_E1EDL49, it seemed the best and the proper way to select handling units is to use HU_GET_HUS function module.

Giving different parameters the function module HU_GET_HUS can get handling unit header and items data for you.

Then I finished the method and wanted to test in directly in SE24. Created the class/object instance, then click GET_HANDLIN_UNIT method, then immediately I got a popup says:

Exception CX_SY_NO_HANDLER triggered
An exception with the type CX_SY_DYN_CALL_ILLEGAL_TYPE occur

I thought all right there is a type conflict and improper usage somewhere. I checked all import and export parameters type, compared with function module interface types and my variables type. But nothing seemed wrong to me! So tried different things: Different table types, giving lt_hum_venum[] instead of lt_hum_venum for an import internal table parameter.

Debug and debug… Even actually there is nothing to debug for the function module. Intelligent SAP catches the error immediately.

Then I started to eliminate each parameter. Then it worked if I did not use the parameters that I need. Suddenly I saw it, I saw what wrong!

I called the function module like that:

CALL FUNCTION ‘HU_GET_HUS’
EXPORTING
if_no_loop = lc_false
it_venum = lt_hum_venum
IMPORTING
et_header = ext_hu_header
et_items = ext_hu_header
EXCEPTIONS
hus_locked = 1
no_hu_found = 2
fatal_error = 3
OTHERS = 4.

But it must be like that:

CALL FUNCTION ‘HU_GET_HUS’
EXPORTING
if_no_loop = lc_false
it_venum = lt_hum_venum[]
IMPORTING
et_header = ext_hu_header[]
et_items = ext_hu_items[]
EXCEPTIONS
hus_locked = 1
no_hu_found = 2
fatal_error = 3
OTHERS = 4.

Did you see the difference! It took me some time to see the difference! What my mistake is I used ext_hu_header for parameter et_items. What I a mistake! Why doesn’t the exception handler tell which parameter is wrong?

It happens sometimes. When you are tried, you cannot able to see with your eyes. You need a refresh air, coffee, etc. Rest your brain! Take a time break!

Tags: ABAP, class, delivery, exception, handling unit, LE, SE24

This entry was posted on Friday, April 30th, 2010 at 10:37 am and is filed under SAP. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.