Relation, authorisation and sequence errorsRelation & missing element

CDS12152Additional Procedure Code (DE 1/11) 1H7 can only be used when submitting an SRDS declaration and is required to be declared on all goods items.

HMRC explanation

An additional procedure code is missing for an H7/SRDS declaration:

Additional Procedure Code '1H7' must be present for the H7/SRDS declaration category.

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