This record concerns the cited page on this date, not permanent service availability or every feature. Data, files and APIs may have different access conditions.
Choose and cross-check sources
Assess independence
Identify the producer of the underlying document. A portal, API and search engine may distribute the same data. To confirm a fact, seek a document with a different origin; to check a transcription, compare the original with its reuse.
Compare dates and versions
The consultation date does not replace the effective, publication or acquisition date. A current and an archived result may both be correct for different periods. Record the status and version of each document.
Interpret a missing result
Keep the query, name variants and filters. No result may reflect limited coverage, a delay, restrictive searching or a wrong identifier. It does not establish that a fact does not exist.