On the Databases tab, double-click a database.
Select Access then Database Options.
In Edit Database Options, select <Default> and click Edit.
On Database General, select Allow Entity Change Management and click OK.
Click OK.
Select Database and then Edit.
From Edit Default Access, select <Owner> and click Edit.
Click Entities , select Allow Entity Change Management and click OK.
From Edit Default Access, select <Default> and click Edit.
Click Entities, select Allow Entity Change Management and click OK.
Click OK and restart the server.