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Medium severitydata source

Power BI Refresh Error:
DynamicsMissingTargetForMultiTargetLookupField

What does this error mean?

A Dynamics 365/Dataverse write failed because a multi-target lookup field is mapped without specifying the target entity type. Multi-target lookups require an explicit entity type.

Common causes

  • 1The copy activity sink mapping for a polymorphic (multi-target) lookup field does not include the target entity type
  • 2The entity type was specified in a previous mapping but was removed or not included when the pipeline was updated

How to fix it

  1. 1In the copy activity column mapping for Dynamics, add a separate mapping entry that specifies the target entity type for the multi-target lookup field.
  2. 2Refer to the ADF Dynamics connector documentation for the correct syntax to specify lookup target entity type in column mappings.
  3. 3Test with a single target entity type first to confirm the mapping syntax is correct.

Frequently asked questions

Does this error affect all pipeline runs or just the current one?

Depends on the root cause. A persistent misconfiguration fails every run; a transient issue may resolve on retry. Check the run history.

Can this error appear in Azure Data Factory and Microsoft Fabric pipelines?

Yes — the same connector errors appear in both ADF and Fabric Data Factory pipelines.

How do I see the full error detail for an ADF pipeline failure?

In ADF Monitor, click the failed run, then the failed activity. The detail pane shows the error code, message, and sub-error codes.

Will downstream Power BI datasets be affected when an ADF pipeline fails?

Yes — a dataset refreshing after the pipeline will use stale data or fail if the target table was cleared. The Power BI refresh may succeed while serving wrong data.

Official documentation: https://learn.microsoft.com/en-us/azure/data-factory/connector-troubleshoot-dynamics-dataverse

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