Error message: "Schema Upgrade Failure"

Issue:

• The synchronization job failed due to schema upgrade issues. 

Cause:

• When a Connector opens an existing iModel, it must first ensure that the schemas stored in the iModel match the current version in the connector. If not, the connector will attempt to upgrade the schemas stored in the iModel. If this process fails for any reason, the connection attempt will terminate.

Solution:

• Contact Bentley Support for assistance.