Emergency-related state tax relief available for taxpayers located in twelve northern Michigan counties impacted by March 2025 storms.
Bulk E-File Error Codes
Bulk E-File Error Codes
If you have received an error code in Michigan Treasury Online (MTO), enter it into the search bar below to receive an explanation of the error.
Error Codes
| Error Code | Explanation of Error |
|---|---|
| B5010 | The file you are trying to upload is too small to include a wage record or is empty. |
| B5020 | The system is unable to upload a file name that exceeds 20 character limit, or contains special characters or spaces. |
| B5030 | The system is unable to upload the file. This file must be a ".zip" file and it must contain only one ".xml" file. |
| B5040 | The file size you are trying to upload is too large. The system is unable to upload a single file larger than 10MB. Try reducing the size by splitting data into multiple files. You can save and upload multiple files. |
| B5050 | The system is unable to upload the file. The system's security is compromised due to a virus/malware that has been identified in the file. |
| B5060 | There was an unexpected error received while attempting to upload your file. Please submit your request again. If you continue to receive the message see "Troubleshooting MTO Error Messages" below. |
| B5070 | An unexpected error occurred during file upload. Please submit your request again. If you continue to receive this message, see "Troubleshooting MTO Error Messages" below. |
| B5080 | An unexpected error occurred during file upload. Please submit your request again. If you continue to receive this message, see "Troubleshooting MTO Error Messages" below. |
| B5090 | An unexpected error occurred during file upload which can result in an incomplete upload. Review the “History” tab to verify if any files were uploaded. If all expected files did not upload in transmission, resubmit entire transmission again. Only returns previously not successfully uploaded will upload to the system. If you continue to receive this message, see "Troubleshooting MTO Error Messages" below. |
| B5100 | Based on the search criteria entered we are unable to locate an acknowledgement. Please change the search criteria and submit your request again. If you continue to receive the message see "Troubleshooting MTO Error Messages" below. |
| B5110 | The system is unable to generate an acknowledgment file for viewing or downloading based on the size of the file. To access the acknowledgement file click on the confirmation number on the history tab. |
| B5120 | Unable to retrieve Bulk File Transmission History data. Please submit your request again. If you continue to receive this message, see "Troubleshooting MTO Error Messages" below. |
| B5130 | Unable to retrieve acknowledgments. Please submit your request again or change search criteria. If you continue to receive this message, see "Troubleshooting MTO Error Messages" below. |
| B5140 | Duplicate Return(s). File(s) not uploaded. All return(s) in this transmission have already been successfully uploaded by this MTO User ID. Check the Acknowledgments tab for a list of Return Filenames already received. If you continue to receive this message, see “Troubleshooting MTO Error Messages” below. |
Troubleshooting MTO Error Messages
If you repeatedly receive an MTO error message, complete all of the following steps. Be sure to reattempt your MTO transaction after each step:
- Verify you are using an MTO supported web browser: Chrome, Edge, Firefox, Safari
- Log out of the MTO session and exit the browser completely
- Shutdown computer and restart
- Clear browser cache
- Switch web browsers and/or computers if possible
If you continue to receive the error message after completing the steps referenced above, please contact the Treasury Customer Service Center during normal business hours (Monday - Friday, 8:00 am - 4:30 pm EST):
- ESA: 517-241-0310
- Registration and SUW: 517-636-6925