Form of agreement.

(a) A spousal agreement is any legal agreement between the parties accepted by PER/ER/RET as meeting the requirements of this section. If in accordance with the regulations, PER/ER/RET will accept as a valid spousal agreement a property settlement agreed to by the parties and approved by a court regardless of the date of the agreement. (b) A spousal agreement must either be authenticated by a court or notarized.