R.I. Gen. Laws § 30-3-16
Resignations of commissioned offices or warrant officers of the national guard shall be in writing and directed to the adjutant general and transmitted through and by all intermediate commanders, who shall indorse the resignations with their approval or disapproval, and shall not be effective until accepted by the governor. No officer shall be permitted to resign his or her commission who shall be under arrest, or against whom charges have been preferred; and no resignation shall be accepted until the officer tendering the resignation shall have furnished to the adjutant general satisfactory evidence that he or she has delivered all moneys in his or her hands as an officer, and all books and other property of the state or of the United States in his or her possession, to his or her next superior or inferior officer, authorized by law to receive them, and that his accounts for money or public property are correct, and that he or she is not indebted to the state.
R.I. Gen. Laws § 30-3-16