Okla. Stat. tit. 12A, § 12A-1-308: Performance or acceptance under reservation of rights

Performance or Acceptance Under Reservation of Rights.

(a) A party that with explicit reservation of rights performs

or promises performance or assents to performance in a manner

demanded or offered by the other party does not thereby prejudice

the rights reserved. Such words as "without prejudice", "under

protest" or the like are sufficient.

(b) Subsection (a) of this section does not apply to an accord

and satisfaction.