Returns the total number of deleted form schemas in the specified namespace that match the specified filter criteria. This counts form schemas in the trash bin, not permanently deleted form schemas.
This method may require higher-level permissions than the caller has, based on their identity and roles and permissions. In these cases, you can ensure the method is called with the required level of authorization by using one of the following:
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.