The correct answer is D. The same document is found in multiple data sources. Relativity's official production documentation identifies this as a staging error . When the same document appears in more than one production data source within a single production set, Relativity generates an error message identifying the overlapping data sources and the duplicate document. This must be corrected before the production can proceed successfully.
This behavior exists because Relativity production data sources are intended to define a clear, non-conflicting set of documents and related production settings. If the same document is pulled from multiple data sources, the system cannot reliably determine which source configuration should govern that document for the production. As a result, Relativity stops the process and requires the administrator to resolve the overlap by adjusting the saved searches used as data sources.
The other options are not the documented production error in this context. Relativity does not identify "too many redactions" as the standard production error described here. Producing the image version of an unresponsive document is a review judgment issue, not a system production error. Producing a native file for a redacted document may raise workflow concerns, but it is not the specific documented staging error addressed by the production help pages. Therefore, the correct answer is D .