Which of the following details is NOT required when logging III record inquiries?

When logging III record inquiries, certain details are essential for accountability and tracking purposes, while others may not be necessary. The correct choice highlights that the requestor's phone number is not required in the logging process.

The other details, such as the requestor's name, the agency from which the request is coming, and the terminal operator's name, are crucial because they provide clear identification of who is making the inquiry, under which agency they are operating, and which specific individual is requesting the information from the system. This structure helps maintain a reliable audit trail, which is important for legality and accountability in handling sensitive data, ensuring that all access can be traced back to authorized personnel.

Therefore, while the identity of the requestor and the agency are vital for security and procedural integrity, the requestor's phone number does not provide the same level of necessity and can be omitted without compromising the integrity of the inquiry log.