AR 600-4 governs Army policy and procedures for remission or cancellation of indebtedness based on injustice, hardship, or both.
View AR 600-4 on armypubs.army.mil
It identifies debts that may or may not be remitted or canceled under 10 USC 7837 and 32 USC 710(c). It sets conditions for requests, factors for determining injustice or hardship, and requirements for application packets.
On the basis of the standards of this regulation, a debt incurred to the Army by an ARNG Soldier may be remitted or canceled under certain conditions. (paragraph 8)
The amount is $150 or less and based on hardship only. (paragraph 9)
A Soldier indebted to the U.S. Government may request that the debt be remitted or canceled on the basis of hardship, injustice, or both.
The application packet must contain evidence that either a. The applicant did not know, and could not have known, of the error; or b. The applicant inquired of a proper authority and was told that the payment was correct.