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HMRC error messages · Income Tax

RULE_FINAL_DECLARATION_RECEIVED

HMRC already has the final declaration for this tax year.

HMRC's message · HTTP 400
Final declaration has already been received

When it appears

Triggering a final calculation or submitting a final declaration.

What to check

  • Whether someone else submitted the declaration.
  • The submission record for the year.

How to fix it

If something needs correcting, use an amendment calculation and declaration for the year.

Making Tax Digital in Accountin

Accountin shows HMRC's code and message next to a plain explanation, and keeps HMRC's reply against every submission.

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