Section 125-102-.07 - CTX FILESA.Generally. Any person remitting for 25 or more separate taxpayer accounts may submit payments to MRS using the ACH credit method and CTX format.B.Testing required. A person making a request under this section to use the ACH credit method and CTX format must, at least six (6) business days prior to submitting an EFT payment to MRS, submit an error-free prenotification test. The prenotification test must include a minimum of two (2), and a maximum of eight (8), test payment transactions. Payments must include addendum information for valid active taxpayer accounts submitted in the format required by MRS specifications.C.File processing. MRS will confirm that the dollar amount deposited equals the sum of dollar amounts contained in the addendum records file for each tax payment. If the amounts are not equal, the file will not be processed by MRS.18-125 C.M.R. ch. 102, § .07