Conforming Loan Payment Notice

We have an upcoming FDIC Compliance Exam. In the pre-exam questioning, I was asked if we provide a "Conforming Loan Payment Notice". I thought this was just for the credit card payments but was told that this also involves "payments on residences". I have searched for some type of guidance and have only found information that pertains to credit cards and helocs. In "googling" the topic, I have found several banks that have the disclosure on their website. This is telling me that I have certainly missed something. Could you give me some guidance or somewhere to look further?