Reg E doesn't care about any recovery limitations your institution may have through NACHA, VISA or Mastercard.
Operating rules for all of these require that you reimburse the customer for any successful return items. You cannot reimburse yourself for recoveries made on recent transactions to offset losses from earlier transactions. If you elect to try and recover on the recent transactions, then you are choosing to go above and beyond Reg E requirements for limiting your customer's losses. Another possible reason for filing claims on recent transactions is to see if you can obtain information that leads you to conclude that the early transactions were legitimate and that no error occurred which allows you to deny the entire claim.
Since 1005.11 does not apply to transactions for which you do not receive timely notice you do not have to provide provisional credit or complete your investigation within Reg E timeframes. In absence of recovery options through your vendor, your only other option is to contact the merchant/originator directly in an attempt to gain additional information about the alleged error.
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