Which transaction code is used to search the NICS Denied Transaction File?

The transaction code utilized to search the NICS Denied Transaction File is QND. This code is specifically designed for querying and retrieving information related to transactions that have been denied under the National Instant Criminal Background Check System (NICS). Understanding the NICS Denied Transaction File is critical for ensuring proper adherence to legal regulations in the context of firearm purchases, as it contains details of individuals who have been denied purchases based on their background checks.

Other transaction codes listed serve different purposes and are not applicable for searching the NICS Denied Transaction File. For instance, some may be related to different queries or data retrievals that do not specifically involve denied transactions. Therefore, QND is the appropriate choice for accessing and investigating the denials that occur within the NICS framework.