The correct answer is A. The field to use for production numbering. Relativity's documentation distinguishes between production set settings and production data source settings . The production set defines overarching settings such as document numbering , appearance of numbering, and related production-wide behaviors. By contrast, the production data source page includes settings such as production type , placeholder image format , burn redactions , burn native redactions , burn PDF redactions , and markup set .
This means the field used for production numbering is not configured at the individual data source level; it belongs to the production set itself. The other options are all part of production data source configuration.
The documentation explicitly shows Burn Redactions and Markup Set , and placeholder behavior is also configured within the production data source settings.
Therefore, the option that cannot be configured when creating a new production data source is the field to use for production numbering , because that is a production-set-level setting rather than a data-source-level one.