Interface RouteFusionEntityValidationError

One reason finalizeEntity refused a submission. RouteFusion returns these as FinalizeOutput.validations alongside the flat error summary — this is the structured half, naming WHICH record is short and WHAT it is short of.

resource is RF's record kind ("Entity", "Representative") and id that record's RF UUID, so a rejection points at the specific representative rather than the submission as a whole. missingKeys are RF's own field names — the same vocabulary entityRequiredFields / representativeRequiredFields report, so a missing key maps back to a required field CFX failed to send.

Every field is nullable: RF populates whichever it can, and a validation carrying only message is legitimate.