What identifier must be used in each transaction on CJIS systems?

The correct answer is the Originating Agency Identifier (ORI). The ORI is a unique alphanumeric code assigned to each agency in the CJIS system, ensuring that all transactions can be accurately tracked and attributed to the appropriate law enforcement or criminal justice agency. This standardization is critical for maintaining the integrity and reliability of data exchanged within the CJIS network.

Using the ORI as an identifier facilitates communication among various agencies and ensures that data sharing adheres to established protocols. It also helps in auditing processes by providing a clear trail back to the originating agency, which is vital for accountability and compliance with federal regulations.

The other identifiers, while possibly relevant in other contexts, do not serve the same fundamental purpose within the CJIS system. For instance, agency names may vary in their usage and could lead to confusion without a unique code like the ORI. Personnel ID numbers and client reference codes pertain to specific individuals or cases but do not provide the overarching agency identification necessary for transaction processing within CJIS systems.