Hi - I have registered for MTD - but hadn’t linked my account so the first time I submitted my return it failed.
I have now linked my account (or I think I have!) but it is still failing with the error msg ‘By System : cvc-enumeration-valid: Value ‘request’ is not facet-valid with respect to enumeration ‘[poll]’. It must be a value from the enumeration’
Is there a delay from linking the account to being able to submit a return?
If the account has successfully linked then it should happen instantly. You’ll need to make sure you have rolled back the ‘failed’ return before you submit the new return.
It may also be worth going through this guide to make sure that everything is set up correctly: HMRC Tax Accounts - MTD Returns