# UnknownFieldValueDefaultEngine

The number of the child server that you want to be the default server when UnknownFieldValueAction is set to `Default`. All index actions where the DistributeByFieldsCSVs fields contain unknown values are sent to this child server.

Type: | Long
Default: |
Required: | No
Configuration Section: | Server
Example: | `UnknownFieldValueDefaultEngine=2`
See Also: | DistributeByFields DistributeByFieldsCSVs UnknownFieldValueAction

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