NiFi Ingest 25.4
NiFi Ingest

# Generate Error Reports

Connectors can generate reports of errors. The connector sends FlowFiles, each reporting a single error, to an output relationship named `report`. This relationship is terminated by default.

The generated FlowFiles have the following attributes.

Name | Description
--- | ---
`idol.report.iserror` | A Boolean value (true or false) that indicates whether the FlowFile represents an error.
`idol.report.processorid` | The ID of the processor that generated the report.
`idol.report.message` | The message associated with the report, for example "INGESTION: Failed 1 documents".
`idol.report.param.*` | Additional keys and values from the report, if any.
`idol.report.property.*` | You can add additional fixed properties to the error reports that are generated by a connector. To do this, add dynamic properties to the connector processor. The names of these dynamic properties must start with `report:`. For example, if you add a dynamic property named `report:field1` then each error report FlowFile that is generated by the connector will have an attribute named `idol.report.property.field1`.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery NiFi Ingest 25.4

Topic Title: Generate Error Reports