What is the default numbering prefix in the Relativity processing system?

In the Relativity processing system, the default numbering prefix is "REL." This prefix is part of the standard naming convention for produced documents within the platform. When documents are processed, they are assigned a sequential number, which helps maintain organization and traceability for each item within a case.

Using "REL" as the prefix ensures that all processed documents have a consistent identification format, making it easier for users to reference and manage documents throughout the review and production phases. In contrast, other options such as "REL1" or different field names do not represent the system’s established convention for document numbering, and "Custodian Field" is specifically related to metadata about the document owner rather than the numbering convention itself. Thus, "REL" is the correct and recognized prefix used by the Relativity processing system.