Relation, authorisation and sequence errorsRelation & missing element

CDS12074Relation error: Because Data Element 1 is not supplied, Data Element 2 is mandatory

HMRC explanation

Data elements are missing and one or the other is required
Check the data element completion guide for the CDS Tariff, and declare one or the other but not both. For example, exporter, consignor and carrier, complete either an EORI or name and address. See Tariff for specific requirements

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.

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