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8 min read Priya Nair, Principal AI Engineer

RAG that survives an audit: sourcing, citations and retention

Retrieval-augmented generation becomes enterprise-grade when every answer is traceable to a specific document version, filtered by the asking user's permissions, and retained according to policy.

Published 21 April 2026 · Updated 28 June 2026

RAGLLMComplianceDocument Intelligence

Key takeaways

  • Index document versions, not documents; answers must cite the version they used.
  • Apply access control at retrieval time, never at display time.
  • Chunking strategy affects answer quality more than model choice in most deployments.
  • Measure groundedness continuously, not once at launch.

Lineage beats cleverness

Store source, version, effective date and owner alongside every chunk. When a policy changes, superseded content must stop being retrievable, and previous answers must remain explainable against the version that produced them.

Permission-aware retrieval

Filter the candidate set by the requesting user's entitlements before ranking. Post-filtering leaks information through summaries and is not defensible in a review.

Chunking and evaluation

Structure-aware chunking that respects headings, tables and clause boundaries typically improves answer quality more than upgrading the model. Validate with a groundedness score on a fixed question set and track it release over release.

  • Preserve tables as structured content rather than flattened text
  • Keep clause and section identifiers in metadata for citation
  • Re-embed on document change, not on a fixed schedule alone

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