What cas_example_NHH26-0915.json leaves out, and why - country_of_dispatch (DE 5/14) is not stated in any document; likely CN because the exporter's own address names it. Not written: that is the declarant's call - Not written, because no invoice, packing list or transport document states them: the customs value and the statistical value (a valuation, not a reading), the declaration type, the procedure codes, the customs office, and the previous document an import follows (the temporary storage reference). CAS takes these from the customs flow the tenant configures, or the declarant adds them. - direction IN, storageLocationReference YOUR-CAS-LOCATION and externalReference NHH26-0915 were given by the sender, not read