Missouri Notice and Verification of Corrected Debtor Social Security Number is a form used by debt collectors in Missouri to verify the accuracy of a debtor's Social Security number. It is used when a debt collector has reason to believe the debtor's Social Security number is inaccurate or incorrect, and is required by the state of Missouri prior to initiating any collection activity. There are two types of Missouri Notice and Verification of Corrected Debtor Social Security Number: one for individuals and one for businesses. The individual form requires the debtor to provide documentation proving the accuracy of their Social Security number, while the business form requires the business to provide documentation proving the accuracy of the Social Security number of the representative of the business who is responsible for the debt. Both forms must be signed by the debtor or business representative and returned to the debt collector before any collection activity can be initiated.