I've looked through Reg-E and no where do I see a requirement for the FI to send any sort of acknowledgment to the customer stating they have opened a case or are aware of the reported error.
Obviously the FI needs to send notification of their findings on whether an error occurred or not, plus notification for provisional and final crediting.
Am I missing something in the Reg concerning some sort of required 'initial acknowledgment' or is there really no requirement for this? Is there a best practice that some FIs follow to show they are handling reported errors within the required timeframes (in other words: a way of establishing for auditors that the clock is actually being started when the claim is reported)?