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Troubleshoot MTO Error Messages

MTO error messages are used to inform system users that MTO stopped working at a particular point. Regardless of the type of error message received, the reason for the error is the same - MTO has lost connection with Treasury's servers. MTO connection loss can occur for a variety of reasons, the root cause can be on Treasury's side or the user's side.

MILogin & Common Error Codes

Certain error codes are not specific to one area of MTO. Learn more about common error codes related to this Treasury web service.

Common Error Codes

Registration Services

These services allow an MTO user to interact with business tax accounts. Learn more about error codes that appear when starting or managing your business.

Registration Services Error Codes

Tax Services

These services allow an MTO user to interact with Essential Services Assessment (ESA), Flow-through Entity (FTE) Tax, Marihuana Retailer Excise (MRE) Tax, Medical Marihuana Facilities (MMF) Tax, as well as Sales, Use, and Withholding (SUW) Taxes. Learn more about error codes that appear when interacting with these tax types on behalf of your business.

Tax Services Error Codes

Guest Services

These services allow MTO users to send returns, payments, and other information to Treasury and serve as an electronic equivalent of mail while maintaining security. Learn more about error codes relating to bulk e-file, fast file, fast pay, streamlined sales, and EFW2 upload.

Guest Services Error Codes