Evidence that expires
Certificates have dates; tenders have validity periods; awards come months after submission. The library watches the overlap and flags citations of certificates that will not be valid when it matters.
Inspection requirements
Matched against your ITPs and procedures rather than product literature. Where a requirement needs a hold point you do not have, it comes to you as a specific item, not a general request to "review the inspection section".
Editions and levels
Standards edition mismatches and certification-level requirements (3.1 vs 3.2, PED modules, NACE) are extracted explicitly, because they are where tenders are quietly lost.