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APPLIES TO: 
2013 2016 2019 Subscription Edition 
SharePoint in Microsoft 365
Rule Name: Business Data Connectivity connectors are currently enabled in a partitioned environment
Summary: Business Data Connectivity (BDC) Models containing External Content Types with database, WCF, Web service or custom connectors can be used by tenants to elevate their user permissions. In a partitioned environment, we recommend you disable the Business Data Connectivity connectors.
Cause: Business Data Connectivity connectors are currently enabled in a partitioned environment.
Resolution: Disable unwanted connectors by using Microsoft PowerShell.
- To disable the unwanted connectors, follow the instructions in Business Data Connectivity connectors in a partitioned environment in SharePoint Server - KB 983546.