Failed to map database objects. An item with the same key has already been added.

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Download xSQL Compare Bundle, starting from $0!

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We just released a new build (9.0.5.0) of xSQL Schema Compare tool that addresses a recently reported issue with object mapping. In certain cases the database schema comparison may fail in it's first stage (object mapping) with the error message "Failed to map database objects. An item with the same key has already been added." 
If you run into this issue please download and install the latest build from our website: https://www.xsql.com/download/sql-server-comparison-bundle