Auto-Enrolment (MyFutureFund) Submission Errors
This page deals with possible submission errors related to auto-enrolment and MyFutureFund. Please refer to the following pages for general information and submission guidelines:
The following table contains information about error codes and messages you might receive while uploading your submission files. Identify the relevant error code or message, and then follow the suggested steps.
| Error Code | Error Message | Suggested Resolution |
|---|---|---|
| MFFERR005 | Participant PPSN could not be found for the given Employer Registration Number. | Confirm the accuracy of the PPSN of the employee under Basic Info. |
| MFFERR008 | First Name must not exceed 50 characters. | Check the First Names field under the employee's Basic Info. |
| MFFERR011 | Family Name must not exceed 50 characters. | Check the Last Name field under the employee's Basic Info. |
| MFFERR020 | For the same employer and tax year, each submission must have a unique combination of payroll run reference and submissionID. | Ensure that you are not submitting a duplicate file or resubmitting the same file by mistake. Duplicate files are rejected. |
| MFFERR021 | PPSN is missing. | Ensure that the PPSN field has been completed for the employee under Basic Info. |
| MFFERR033 | Each of the following should be unique across submissions: Payroll Run Reference, Tax Year, Employer Registration Number and Line Item ID. | An employee record that has already been submitted in a previous file will display this error if you try to submit it as part of another submission file. In theory, this should not be possible with the files SimplePay generates. |
| MFFERR044 | Employer contribution amount is not matching based on the contribution amount derived with respect to contribution rate as on aepnDownloadDateTime. | Ensure that you have not edited the submission file. SimplePay populates it by default. |
| MFFERR096 | Employment ID required for specified PPSN. | Ensure that you have not edited the submission file. SimplePay populates it by default. |
| MFFERR097 | Employer Registration Number format is not correct. | Check that the PAYE Registered Number is correct and does not contain any spaces or symbols. |
| MFFERR099 | The window for accepting alterations for this payroll is closed and alterations cannot be accepted anymore. | You should contact NAERSA. |
| MFFERR100 | Previous Line Item ID is not valid for the following fields: Employer Registration Number, Payroll Run Reference and/or Tax Year. | Ensure that all prior contribution submission files have been uploaded successfully, in the order in which they were provided. |
| MFFERR101 | The deleted line item ID could not be found. This may be because it was never successfully submitted in the first place, or because no matching ID was located using the provided Employer Registration Number, Payroll Run Reference and Tax Year. | Ensure that all prior contribution submission files have been uploaded successfully, in the order in which they were provided. |
| MFFERR105 | Contribution pay date must be on or after enrolment date. | Ensure that contributions are not being made for periods prior to enrolment. |
| MFFERR106 | Paydate for the contribution must be on or after the MyFutureFund go live date. | The pay date must be on or after 1 January 2026. |
| MFFERR121 | Delete line item request already submitted for the same payroll run reference. | Ensure that you are not trying to submit a file that was already submitted to NAERSA. |
| MFFINTERR0003 | Invalid taxYear. | Ensure that you are not making submissions for periods prior to the 2026 tax year. |
| MFFINTERR0004 | Invalid employerReg. | Confirm the accuracy of the Employer Registration Number you entered in the PAYE Registered Number field on the Employer Filing Details screen. |
| MFFINTERR0104 | Mandatory Field Missing: employerReg. | Ensure that you have entered the Employer Registration Number in the PAYE Registered Number field on the Employer Filing Details screen. |
| MFFWAR002 | AEPN not matched for the records available in the system. | A warning is given, but the submission is still accepted. |
| MFFWAR046 | Employee contribution amount does not match the expected amount based on the contribution rate at AEPNDownloadDateTime and relevant payment reason is not provided. | Ensure that you have not edited the submission file. SimplePay populates it by default. |
| UNEX | Uploaded file content is NOT as per contribution submission specification. | Ensure that you have not edited the file after downloading it from SimplePay. |
If your query cannot be resolved by using the table above, please contact NAERSA. You can find their contact details as an FAQ here.