How to list all Schemas in a RVT and then to Delete them

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Purge schemas

You need set mode overrideWriteAccessWithUserPermission to True, or filter just schema allow permission is True , and you can follow api at EraseSchemaAndAllEntities Method and check python script example bellow. import clr clr.AddReference('RevitServices') from RevitServices.Persistence import DocumentManager from RevitServices.Transactions import TransactionManager clr.AddReference('RevitAPI') from Autodesk.Revit.DB.ExtensibleStorage import Schema # Input parameters schemaName = "<YourSchem…