In Data Foundations, "Ingest" is not limited to Discovery. It includes establishing reliable sources and mechanisms to populate and maintain CMDB attributes--especially those that Discovery cannot provide. Warranty expiration dates are a classic example of non-discoverable data: they typically come from procurement systems, asset repositories, vendors, or contract tools rather than from device interrogation.
The correct approach is to maintain these attributes via a scheduled data import from an authoritative external source. This ensures ongoing accuracy and consistency at scale. A scheduled import allows you to define a repeatable integration pattern, apply data quality checks, and keep warranty data current as vendors and procurement records change--without relying on manual updates that inevitably drift over time.