# SOP-1300: Update Document

**Applies to:** All projects using the COR document system
**Last updated:** 2026-03-14
**Last reviewed:** 2026-03-14
**Status:** Active

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## What Is It?

A standard process for modifying an existing document. Ensures all changes are traceable through the Change History and that the document remains consistent with the rest of the system.

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## Steps

1. **Read the current version** — understand the existing content before making changes (see COR-1101)
2. **Make your edits** — update the relevant sections
3. **Update the Last updated date** — change to today's date
4. **Add a Change History entry** — append a row with date, description of change, and author
5. **Review cross-references** — check if other documents reference this one and need updating
6. **Sync if applicable** — if this is a COR document, ensure copies in other projects are also updated

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## Rules

- Never delete Change History entries — they are the audit trail
- Keep the document structure consistent with the template defined in COR-1100
- If the change is significant enough to warrant discussion, create a Decision Record first (COR-1000)

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## Change History

| Date | Change | By |
|------|--------|----|
| 2026-03-14 | Initial version | Claude Code |
