Requesting the collection agency to validate the debt

[Name of the Collection Agency]
[Address of the Collection Agency]
Date
Dear Sir/Madam,

I have recently pulled my credit report from< Name of the Credit Bureau> and have noticed that your organization has reported that I owe a debt. But, I am not aware of this debt.
According to Fair Debt Collection Practices Act, I request you to validate the debt that you have reported.

Thank You,
Yours sincerely,
<Your signature>
<Your address>