With debt validation you request the debt collector to send proof of the debt you allegedly owe. (creditrepair.org)
This sample debt validation request letter can be used to send to harassing debt collectors to have them verify the debt that they are attempting to collect. (leekelaw.com)
Your debt validation request must be in writing received by the collector within 30 days of receiving the debt validation notice from the collection agency. (debtsettlement.com)