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Error: "DZZMP400 Corrupt"

This support note applies to:

  • AE MAS (AU)

Article ID: 26856

In MYOB Accountants Enterprise (AE) MAS, you may experience one of the following errors:

  • "DZZMP400 corrupt" when performing a bank reconciliation or opening a MAS ledger

  • Bank reconciliation shows an out of balance amount; 

  • Presented entries reappear on the bank reconciliation window once they've been deleted

To resolve this issue:

  • If you can open the MAS ledger, you'll need to refresh the bank reconciliation file by following the three tasks below.

  • If the error "DZZMP400 corrupt" appears when attempting to open the MAS ledger and you don't have any Bank statement data, skip to Task 2 to rename the DZZMP400 file. Alternatively if you do have data entered in the Bank Statement, you may need to restore from a recent backup.

Prior to performing the steps in this article we recommend taking a backup of the ledger. For steps, refer to our topic on Backing up a MAS ledger using System Release.

1. Disable Bank Reconciliation

  1. Open the MAS ledger and follow the menu path Setup > Client Files > Ledger Options.

  2. Click the Edit button. The cursor appears in the Report Headings field.

  3. Press Enter until the cursor appears in the Bank Rec? field and type N. The cursor appears in the Client Audit field.

  4. Click the OK button. The message "Bank rec flag has been changed from "Y" to "N", this requires erasing the Bank reconciliation file. Do you wish to proceed?"

  5. Click Yes then exit out of the MAS ledger.

2. Rename the DZZMP400 file

  1. Open Windows File Explorer and navigate to the folder where your MAS ledger files are stored.
    For example, X:\S6CLIENT or X:\MYOBAE\AESQL\S6CLIENT where X:\ is the name of the shared drive where your MAS ledger files reside.

  2. From within the S6CLIENT directory, find and open the folder the affected client code.

  3. From within your client's folder, right-click the file DZZMP400 and from the drop-down, select Rename.

  4. Rename the DZZMP400 file to DZZMP400.old, then press ENTER on the keyboard.

3. Enable Bank Reconciliation and restore previously entered transactions

  1. Open the MAS ledger and follow the menu path Setup > Client Files > Ledger Options.

  2. Click the Edit button. The cursor appears in the Report Headings field.

  3. Press Enter until the cursor appears in the Bank Rec? field and type Y. The cursor appears in the Client Audit field.

  4. Click the OK button twice. The Bank Reconciliation screen appears.

  5. Click Edit and type Y in the Update the Bank reconciliation file with previously entered transactions? field. The From date field becomes available.

  6. In the From date field, type the start date to retrieve transactions from. Then click OK. The MAS ledger appears.

Check that the Bank Reconciliation figures are now correct.