# R03 · Map of sources and coverage

**What it is for.** Locate sources, limits, frequency and gaps.

**When to use it.** Before making a decision or updating the corresponding product. You can use a spreadsheet, a document or a notebook; no software licences are needed.

## How to use it

1. Start with the real decision or question you need to resolve and set a cut-off date.
2. Fill in only what can be verified; write **NOT VERIFIED** when data is missing.
3. Separate observed facts, hypotheses and implications, and name a reviewer.
4. Keep the original version and record relevant changes when you update it.

## Editable template

| Source | Type | Identifier or URL | Question covered | Legitimate access | Cadence | Review date | Blind spot |
|---|---|---|---|---|---|---|---|
| | | | | | | |

## Guided example · Company A

In the fictional case, Company A combines manufacturers' press releases, patents and technical publications; no single source proves commercial adoption.

## Mistake to avoid

The register must say what each source does NOT cover, not only what it contains.

## Final check

- Is it clear which decision or need it serves?
- Can the evidence be located, and is it dated?
- Are uncertainties and limits made explicit?
- Can someone else repeat or review the work?

**Notice:** entirely fictional case. The tools are for educational purposes; they do not represent an audit or certification.