Synchronize the database from the Upgrade checklist by clicking > > > > > .

Synchronize the table and index information to the database. By doing this, Microsoft Dynamics AX creates all the tables it needs in order to operate, and modifies or deletes existing tables and views that have been modified or removed from the database. Synchronization is mandatory while you are upgrading, and when views and schema changes in the Application Object Tree (AOT) are populated to the database.

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