N.D. Cent. Code § 41-01-22 (2025)
41-01-22. (1-308) Performance or acceptance under reservation of rights.
1. 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.
2. Subsection 1 does not apply to an accord and satisfaction.