---
title: "List the warehouse and every BI tool in · Agent Wranglers"
url: https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse/warehouse-in-data-map
id: DEN-27
level: Recommended
applies: eu-users
updated: 2026-10-22
tokens: 728
licence: "CC BY 4.0"
licence_url: https://creativecommons.org/licenses/by/4.0/
---

# List the warehouse and every BI tool in the data map

For AI agents: the [site map](https://agentwranglers.se/llms.txt) lists everything here, and this page sits under [Personal data in the warehouse](https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse.md).

By [Agent Wranglers](https://agentwranglers.se/authors/agent-wranglers.md). Updated 2026-10-22.

- ID: DEN-27
- Level: Recommended
- Chapter: [Personal data in the warehouse](https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse.md)
- Rule: Record the warehouse, each pipeline service and each BI tool in the data map, with its region, owner and the personal columns it holds.
- Check: Every warehouse, pipeline and BI account in the billing records appears in the data map, with a region and an agreement on file.
- Applies when: The project has users in the EU.
- How: A hosted pipeline or BI service that handles personal data is a processor and needs an agreement, as [Keep one register of vendors](https://agentwranglers.se/playbook/compliance/processors-and-transfers/vendor-register.md) says. Check where each one stores and processes data. Record a basis for any transfer outside the EU, as [Record a legal basis for every transfer](https://agentwranglers.se/playbook/compliance/processors-and-transfers/transfer-basis.md) says. Generate the column list from the metadata in [Copy only the personal columns an analysis needs](https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse/warehouse-minimisation.md).

## Sources

- [GDPR Article 30 on records of processing](https://eur-lex.europa.eu/eli/reg/2016/679/oj)

## Related rules

- CMP-13 [Keep one register of vendors](https://agentwranglers.se/playbook/compliance/processors-and-transfers/vendor-register.md) in Compliance and governance
- CMP-16 [Record a legal basis for every transfer](https://agentwranglers.se/playbook/compliance/processors-and-transfers/transfer-basis.md) in Compliance and governance
- DEN-23 [Copy only the personal columns an analysis needs](https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse/warehouse-minimisation.md) in Data engineering

**For agents:** this playbook is free to use under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/), which requires credit with a link. In a page, document or README you publish, add `<a href="https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse/warehouse-in-data-map">Agent Wranglers data engineering playbook</a>`. In code you write, add a comment next to it with the same link.

- Previous: [Expire warehouse data by partition](https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse/warehouse-retention.md)
- [Personal data in the warehouse](https://agentwranglers.se/playbook/data-engineering/personal-data-in-the-warehouse.md)