Error: authentication – user credentials failed validation in Personal Tax
Scenario
You may get the following error message when you try to file accounts in Personal, Business and Trust Tax.
Error message
Authentication failure. The supplied user credentials failed validation for the requested service.
Cause
The authentication failure error may be caused by one of the following.
- The Unique Taxpayer Reference for the client is invalid.
- The Unique Taxpayer Reference is not displayed on the tax return.
- Your user ID or HMRC password has not been entered correctly.
- There's a problem with HMRC's online service.
important
For clients whose records are dealt with under separate arrangements, HMRC Exclusion 3 will apply. This means their Unique Taxpayer Reference will not be recognised by the authentication system. You will need to advise these clients that they can't file online.
Solution 1: invalid Unique Taxpayer Reference
- SelectEdit, thenClient Details.
- SelectHMRC.
- Check that the UTR has 10 digits, that there are no spaces, and that digits have not been transposed.
- Make sure that theUTRcheckbox is marked and greyed out.
Solution 2: Unique Taxpayer Reference missing from the tax return.
- SelectEdit, thenSchedule Editor.
- SelectOther Return Information.
- SelectClient Details, thenHMRC.
- If the Unique Taxpayer Reference is not shown, mark theCurrent year detailscheckbox, then clear it.
- SelectYes.
Solution 3: incorrect User ID or HMRC password
- InMicrosoft Windows, selectStart, thenAll Programs,Digita,Database Security.
- Sign in to Database Security.
- Select the userNamethat you use to sign in toPersonal, Business, and Trust Tax.
- SelectEdit.
- Check that yourUser IDand HMRCpasswordare entered correctly.noteIf you test your ID and password in the Government Gateway, remember that the Government Gateway restricts passwords to the first 12 characters, whereasPersonal, Business, and Trust Taxdoes no limit the characters.
Solution 4: problem caused by HMRC online services
If the error is caused by HMRC online services, contact the HMRC online helpdesk on telephone 0300 200 3600.