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# DREREGENERATE

Allows you to regenerate an index. You can use this index action to:

- update a specified index after a validation failure, or if you want to modify or define new fields after indexing content into Distributed Index Handler, without reindexing your data. In this case, set Type to the type of index that you want to regenerate.

- update the field configuration for your server, and regenerate any indexes, without restarting the server. In this case, set FieldProcessingSection to the field processing configuration section that you want to update or regenerate.

- fix the parent-child relationships for ReferenceMemoryMappedType fields that have been indexed out of order. For example, a child in the hierarchy might be indexed before its parent. In this case, set Type to `ReferenceMemoryMapped`.

You must set Type, unless you set FieldProcessingSection.

You must set FieldProcessingSection if you want to use AugmentFieldCSVs, AugmentNegativeFieldCSVs, DiminishFieldCSVs, or DiminishNegativeFieldCSVs to update the field configuration.

## Example

    http://12.3.4.56:9071/DREREGENERATE?Type=Numeric,NumericDate

## Required Parameters

You must set at least one of the following parameters.

Parameter | Description
--- | ---
FieldProcessingSection | The field processing configuration section that you want to update.
Type | The type of index to regenerate.

## Optional Parameters

This action accepts the following optional parameters.

Parameter | Description
--- | ---
AugmentFieldCSVs | A list of fields to add to the FieldProcessingSection PropertyFieldCSVs parameter.
AugmentNegativeFieldCSVs | A list of fields to add to the FieldProcessingSection PropertyNegativeFieldCSVs parameter.
DiminishFieldCSVs | A list of fields to remove from the FieldProcessingSection PropertyFieldCSVs parameter.
DiminishNegativeFieldCSVs | A list of fields to remove from the FieldProcessingSection PropertyNegativeFieldCSVs parameter.

This index action accepts the following standard index action parameters.

Parameter | Description
--- | ---
IgnoreMaxPendingItems | Whether to ignore the IndexQueueMaxPendingItems limit for this index action.
IndexUID | An identification code for any document tracking events.
NoArchive | Turn off configured archiving for the index action.
Priority | The priority for the index job.

## Comments

You must set the Type parameter, unless you have also specified the FieldProcessingSection parameter.

If you set AugmentFieldCSVs, AugmentNegativeFieldCSVs, DiminishFieldCSVs, or DiminishNegativeFieldCSVs, you must also set FieldProcessingSection.

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