Relation, authorisation and sequence errorsRelation & missing element

CDS12119Relation error: Declared Additional Document (D.E. 2/3) is not allowed with this Procedure Code (D.E. 1/10 or D.E. 1/11)

HMRC explanation

Additional document not allowed or is missing

Additional document code, for example licence, exemption or authorisation number, is not allowed or must not be declared with other data in the declaration.

Examples include C512 and C514 (SDP and EIDR authorisations) not permitted with certain procedure codes; licence document code restrictions with certain additional procedure codes, Special Procedure authorisations required with certain procedure combinations.

Source: HMRC, Customs Declaration Service error codes, Open Government Licence v3.0. GOV.UK publication · Licence

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.

A declaration that clears CDS can still be wrong

The free eligibility checker confirms your import activity and whether a free post-clearance audit applies. No data upload, no commitment.

Source: HMRC, Customs Declaration Service error codes, Open Government Licence v3.0. GOV.UK publication · Licence