1597172 - SU01 SAPSQL_ARRAY_INSERT_DUPREC or DBSQL_DUPLICATE_KEY_ERROR dump when copying users - SAP ERP & SAP S/4 HANA

Error when trying to create a user via copying another user in transaction SU01. System dumps with below details.

Category               ABAP Programming Error
Runtime Errors         DBSQL_DUPLICATE_KEY_ERROR / SAPSQL_ARRAY_INSERT_DUPREC
Except.                CX_SY_OPEN_SQL_DB
ABAP Program           CL_PERS_ACCESS_MM_PUR=========CP
Application Component  MM-PUR

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• 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

SAP ERP Central Component all versions ; SAP ERP all versions ; SAP S/4HANA all versions ; SAP enhancement package for SAP ERP all versions ; SAP enhancement package for SAP ERP, version for SAP HANA all versions

CL_PERS_ACCESS_MM_PUR=========CP, CL_PERS_ACCESS_MM_PUR=========CM001, IF_PERS_EXTERNAL_TABLE~SAVE_BUFFER, MEPO, ME22N, ME23N, timeout, TIME_OUT, ECC, ESDUS, inconsistenr, inconsistency, ZDELESDUS, DBSQL_DUPLICATE_KEY_ERROR, SAPSQL_ARRAY_INSERT_DUPREC , KBA , MM-PUR-PO-GUI , Userinterface - Purchase Orders , BC-SEC-USR-ADM , Users and Authorization administration , Problem