# 3.6 Compliance & Documentation Requirements

## Core Goals
- Run automated compliance checks on procurement transactions to enforce policy adherence.
- Maintain a document repository for quotes, contracts, certifications, and related evidence.
- Provide document version control to track revisions and approvals over time.

## Functional Expectations
- Compliance rules should validate mandatory fields, approval states, and policy constraints before progression.
- Repository features must support metadata tagging, retention, and access control per tenant.
- Version history should preserve change authorship, timestamps, and comparisons.

## Implementation Notes
- Integrate compliance validation into workflow steps and controller guards.
- Store documents in managed storage with audit-friendly metadata.
- Surface document histories within procurement views to aid reviewers during audits.
- Tag documents appropriately: quotes with "quotes" tag, contracts with "contracts" tag, vendor certifications with "vendor certifications" tag.
- Include expiry dates in metadata for certifications and contracts to enable automated alerts and compliance checks.