# ReservedFieldnames

A comma-separated list of field names that the task must not use. If the task needs to add a metadata field with one of the specified names, it prefixes the name with an underscore.

For example, if you specify `FieldnamePrefix=FIELD_` and `ReservedFieldnames=Reserved1,Reserved2` CFS does not create fields named `FIELD_Reserved1` or `FIELD_Reserved2`. Instead, it adds fields named `_FIELD_Reserved1` and `_FIELD_Reserved2`.

Type: | String (comma-separated list)
Default: |
Required | No
Configuration Section: | Any section that contains settings for the `ExtractMetadata` task
Example: | `ReservedFieldnames=ReservedField1,ReservedField2`
See Also: | FieldnamePrefix

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