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Error message: 'An item with the same key has already been added.' while Update Model from Database using IBM DB2 .Net Entity Framework provider.

Troubleshooting


Problem

If you have deployed overloaded stored procedures in database e.g. SP1(IN p1 INT, OUT p2 INT) SP1(IN P1 INT, IN p2 INT, OUT p3 INT) After generating Entity Data model when you try to Update Model from Database, you may receive an error "An Item with the same key has already been added".

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Document Information

More support for:
Db2 for Linux, UNIX and Windows

Software version:
9.7, 10.1

Operating system(s):
Windows

Document number:
490895

Modified date:
01 May 2025

UID

swg21635456

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