CDS12005Authorisation Error: Party ID unknown or invalid
An EORI or VAT number on the declaration is not recognised, or the number is not permitted in the data element where it was entered.
What to check for CDS12005
- Each EORI and VAT number against the party it belongs to.
- That each number sits in the data element meant for that party.
- That the number is the one registered for that party, and is being used where HMRC allows it.
What to check across the Relation, authorisation and sequence errors
Two elements, or a value and a rule, disagree. Read both elements together: completing one element with a particular code often requires another value, and the fault is frequently in the element you did not change. The family also covers parties and authorisations that are not recognised, references that must be unique, and messages sent out of sequence.
What does CDS12005 mean?
CDS12005 is an authorisation error: a party identifier on the declaration, such as an EORI or VAT number, is not recognised, or is not permitted in the data element where it was entered. Check each number against the party it belongs to and the element it sits in before you resubmit.
A declaration that clears CDS can still be wrong
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Source: HMRC, Customs Declaration Service error codes, Open Government Licence v3.0. GOV.UK publication · Licence