Which field must contain a specific reason when purpose code C is used?

When purpose code C is used, it is essential to provide a specific reason in the JUS field. This requirement is in place to ensure that the purpose of the inquiry is clearly articulated, which facilitates appropriate processing and interpretation of the request. The JUS field is meant to capture justification for certain investigative actions or requests, and specifying a reason contributes to the integrity and accuracy of the data maintained within the system.

The other fields mentioned do not carry the same requirement when purpose code C is employed. The Purpose field is generally used to note the inquiry type and may not necessarily detail the specific reason for conducting the search. The Attention field typically serves to direct the response to a specific individual or department without explaining the rationale behind the inquiry. The Interstate Identification Index is a system used for criminal history records, and while it is important, it does not pertain directly to the justification required when using purpose code C.