I am wondering if anyone is adding the Remittance Rule error disclosure for your regular REG E error disclosure. We have a separate disclosure that we hand out for services involving REG E disclosure requirement.

I would not combine them. One is account-oriented; the other is transaction oriented. The subpart A disclosure has to be provided at account opening and then either annually or with each periodic statement; the subpart B disclosure has to be available upon request to a Sender, who need not be a Depositor. The two disclosures have nothing in common.