Hi John,
Welcome to MSDN forum.
According to your description, it seems that you have a conflict when doing a schema compare, please refer to
the similar issue to resolve it.
Then, following
the guide to try again.
BTW, if it persists, we recommend you start a new thread in the
SQL Server Data Tools forum for a more professional help. Thanks for your understanding.
Hoping everything goes well.
Sincerely,
Anna
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