Before final payment upon discharge may be made to an officer of the Army who has been accountable or responsible for public property, he must obtain a certificate of nonindebtedness to the United States from each officer to whom he was accountable or responsible for property. He must also make an affidavit, certified by his commanding officer to be correct, that he is not accountable or responsible for property to any other officer. An officer who has not been responsible for public property must make an affidavit of that fact, certified by his commanding officer. Compliance with this section warrants the final payment of the officer concerned.