Mo. Rev. Stat. § 400.9-628: Nonliability and limitation on liability of secured party — liability of secondary obligor.

(a) Unless a secured party knows that a person is a debtor or obligor, knows the identity of the person, and knows how to communicate with the person:

(1) The secured party is not liable to the person, or to a secured party or lienholder that has filed a financing statement against the person, for failure to comply with this article; and

(2) The secured party's failure to comply with this article does not affect the liability of the person for a deficiency.

(b) A secured party is not liable because of its status as secured party:

(1) To a person that is a debtor or obligor, unless the secured party knows:

(A) That the person is a debtor or obligor;

(B) The identity of the person; and

(C) How to communicate with the person; or

(2) To a secured party or lienholder that has filed a financing statement against a person, unless the secured party knows:

(A) That the person is a debtor; and

(B) The identity of the person.

(c) A secured party is not liable to any person, and a person's liability for a deficiency is not affected, because of any act or omission arising out of the secured party's reasonable belief that a transaction is not a consumer-goods transaction or a consumer transaction or that goods are not consumer goods, if the secured party's belief is based on its reasonable reliance on:

(1) A debtor's representation concerning the purpose for which collateral was to be used, acquired, or held; or

(2) An obligor's representation concerning the purpose for which a secured obligation was incurred.

(d) A secured party is not liable under section 400.9-625(c)(2) more than once with respect to any one secured obligation.