Error in Mirrored google Big query

Hi Anonymous, 

Here’s what that message usually means and how to get unblocked, plus some cost/design guidance for BigQuery vs a custom CDC pipeline.

Troubleshooting steps:

1. Treat “Running with warnings -> Internal system error occurred (ArtifactId …)” as transient first. Reseed the affected table(s): in the Mirroring item, open Configure replication, uncheck the problem table(s), Save, then re-check and Mirror database. You can also stop and start mirroring if multiple tables show it. See status meanings in Monitor replication.
2. Verify gateway + permissions. BigQuery mirroring requires OPDG 3000.286.6+ and a service account with the documented BigQuery and GCS permissions (BigQueryAdmin + StorageAdmin covers them). Security requirements. 
3. Only tables are supported. Replace views with materialized tables before mirroring. Troubleshooting: views not supported. 
4. Expect some lag. BigQuery CDC has an inherent ~10–15 minute delay, and Fabric increases polling intervals when there are no changes. Tutorial and limitations. 
5. If it persists, open a ticket with the ArtifactId, mirrored item URL, failing table, and timestamp. BigQuery mirroring is in preview. 

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