Rule 2-401. Parties; capacity.

A. Real party in interest. Every action shall be prosecuted in the name of the real party in interest; but an executor, administrator, personal representative, guardian, trustee of an express trust, a party with whom or in whose name a contract has been made for the benefit of another, or a party authorized by statute may sue in his own name without joining with him the party for whose benefit the action is brought; and when a statute of the state so provides, an action for the use or benefit of another shall be brought in the name of the state. Where it appears that an action, by reason of honest mistake, is not prosecuted in the name of the real party in interest, the court may allow a reasonable time for ratification of commencement of the action by, or joinder or substitution of, the real party in interest; and such ratification, joinder or substitution shall have the same effect as if the action had been commenced in the name of the real party in interest. B. Capacity to sue or be sued. The capacity of an individual, including those acting in a representative capacity, to sue or be sued shall be determined by the law of this state. The capacity of a corporation to sue or be sued shall be determined by the law under which it was organized, unless some statute of this state provides to the contrary. C. Minors or incompetent persons. When a minor or incompetent person has a representative, such as a general guardian, or other like fiduciary, the representative may sue or defend on behalf of the minor or incompetent person. If a minor or incompetent person does not have a duly appointed representative he may sue by his next friend or by a guardian ad litem. The court shall appoint a guardian ad litem for a minor or incompetent person not otherwise represented in an action or shall make such other order as it deems proper for the protection of the minor or incompetent person. D. Consumer debt claims. (1) Collection agencies may take assignments of claims in their own names as real parties in interest for the purpose of billing and collection and bringing suit in their own names; provided that no suit authorized by this section may be instituted on behalf of a collection agency in any court unless the collection agency appears by a licensed attorney-at-law; and further provided that the collection agency must plead specific facts in its initial pleading demonstrating that it is the real party in interest. (2) In any consumer debt claim in which the party seeking relief alleges entitlement to enforce the debt but is not the original creditor, the party must file an affidavit establishing the chain of title or assignment of the debt from the original creditor to and including the party seeking relief. The affidavit must be based on personal knowledge, setting forth those facts as would be admissible in evidence, showing affirmatively that the affiant is competent to testify to the matters stated in the affidavit. An affidavit based on a review of the business records of the party or any other person or entity in the chain of title must establish from personal knowledge compliance with the requirements of Rule 11-803(6)(a)-(c) NMRA, or demonstrate reliance on an attached certification complying with Rule 11-902(11) or (12) NMRA. The business records must be attached to the affidavit or certification.