Final answer:
The specific UIF code used to update MilPDS when a member has a UIF is part of internal military procedures and not publicly detailed, involving an update to the member's record indicating a UIF is on file.
Step-by-step explanation:
The Unfavorable Information File (UIF) code that is used to update the Military Personnel Data System (MilPDS) when a member has a UIF only is not publicly available in detail due to the nature of military internal procedures.
However, the process generally involves updating the member's record with a specific UIF code that indicates a UIF is on file. Updating such information in the MilPDS is typically handled by personnel or administrative staff within the member's unit or the base military personnel section.
The UIF serves as a record of adverse behavior and can affect the member's career, including promotions, reenlistments, and assignments. Members are able to access their own files and may, under certain circumstances, contest the contents of their UIF.