3358674 - Update termination upon confirmation/cancelation of Warehouse Task

You receive an express document while trying to confirm or cancel a Warehouse Task (WT):

Express document "Update was canceled" received from author "USER"

If you click on 'Inbox' button, you will see something like this:

System ID.... *
Client....... *
User..... *
Transaction.. *
Update key... *
Created...... *
Completed.... *
Error Info... Internal session terminated with a runtime error DBSQL_DUPLICATE_KEY_ERROR (see

The full error message can be found in transaction /ST22:

Category ABAP programming error
Runtime Errors DBSQL_DUPLICATE_KEY_ERROR
Except. CX_SY_OPEN_SQL_DB
ABAP Program /SCWM/SAPLHU_TO_UPD
Application Component SCM-EWM-WOP
Date and Time *

IF NOT lt_itmins IS INITIAL.
READ TABLE lt_itmins TRANSPORTING NO FIELDS
WITH KEY meins = ' '.
IF sy-subrc = 0.
MESSAGE ID '/SCWM/L3' TYPE 'A' NUMBER 100.
ENDIF.
>>>>> INSERT /scwm/quan FROM TABLE lt_itmins.

Code breaks on highlighted segment.

• SAP Extended Warehouse Management (SCM-EWM);
• SAP Extended Warehouse Management Warehouse Order Processing (SCM-EWM-WOP);
• SAP Extended Warehouse Management Delivery Processing (SCM-EWM-DLP);
• SAP Extended Warehouse Management Radio Frequency (SCM-EWM-RF);
• SAP Extended Warehouse Management Monitor (SCM-EWM-MON);
• SAP S/4HANA;
• SAP NetWeaver;

WO, resource, device, user, duplicate, key, error, mon, /scwm/correct_quants, correct, quants, /SE38, status , KBA , SCM-EWM-WOP , Warehouse Order Processing , SCM-EWM-DLP , Delivery Processing , SCM-EWM-MON , Monitoring , SCM-EWM-RF , Radio Frequency Processing , Problem