3450662 - Dump while creating service purchase order in the FM ME_UPDATE_DOCUMENT

1. While creating the service purchase order, system is generating the PO number after saving it but soon the message “ Express Document update was cancelled received from Author” is raised with below dump.

Category               ABAP programming error
Runtime Errors         DBSQL_DUPLICATE_KEY_ERROR
Except.                CX_SY_OPEN_SQL_DB
ABAP Program           SAPLEINU
Application Component  MM-PUR

The termination occurred in ABAP program or include "SAPLEINU", in "ME_UPDATE_DOCUMENT" in the line 420 "INSERT ekkn FROM TABLE db_ekkn."

2. While creating the service purchase order, below dump is raised.

Category               ABAP programming error                                                       
Runtime Errors         RAISE_EXCEPTION                                                              
ABAP Program           CL_PO_ACCOUNTING_HANDLE_MM====CP                                             
Application Component  MM-PUR                          

• Materials Management (MM)
• SAP ERP Central Component
• SAP ERP
• SAP enhancement package for SAP ERP
• SAP enhancement package for SAP ERP, version for SAP HANA
• SAP S/4HANA

DBSQL_DUPLICATE_KEY_ERROR, CX_SY_OPEN_SQL_DB, SAPLEINU,  INSERT ekkn FROM TABLE db_ekkn, ME_UPDATE_DOCUMENT, LEINUU05 , KBA , MM-SRV-ACC , Account Assignment , Known Error