primary_source · Record identity
Source code for the first source that created the canonical record.
type
text
scope
identity / matching
group
Record identity
sources
varies
Meaning
Source code for the first source that created the canonical record.
The primary source is an ingestion lineage marker; later source records may provide fresher attributes.
Export shape
drugs fieldjson
{
"primary_source": "openfda-ndc",
"_provenance": {
"primary_source": {
"source": "cms-sdud",
"source_url": "https://data.medicaid.gov/dataset/158a1baa-5506-400a-8ec3-97756f0b0536",
"effective": true
}
}
}Provenance
Field provenance follows the dataset contract: values are source-qualified, and records not cleared for the paid release stay out of commercial snapshot/API responses. Each release probes a bounded sample of this field's advertised evidence links; the check outcome is shown here, and a link that did not resolve renders as UNVERIFIED rather than as resolved.
Set from the source registry code that first seeded the canonical product.