---
schema_version: "1"
id: 2e780248d7670259f8a995358babadf2e2b7931f0211898fca05eb807c549d65
title: View Your Mapped Source Data
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/dato_data_mapping_viz_view.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.dato_data_mapping_viz_view.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 8e599356db887d5e29fd05e007a1b31c85ce0291035f26ef48ba33a3167ede45
description: View your external mapped source data in the mapping visualizer using a hierarchy structure.
products:
  - Marketing
  - Marketing Cloud Intelligence
release: "264"
---
# View Your Mapped Source Data

View your external mapped source data in the mapping visualizer using a hierarchy structure.

For example, to see how external data is mapped, you can drill down on the **External Data** column and see the hierarchy— external source, data stream name, and the source field name. ![drill\_down\_external](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-salesforce_datorama-264-0-0-production-enus/d38a342d-dd4a-4af8-8343-f372280a75dd/salesforce_datorama/images/data/dato_data_mapping_viz_external_hier.png)

Clicking a source displays all the data streams created for that source.

![drill\_down\_source](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-salesforce_datorama-264-0-0-production-enus/d38a342d-dd4a-4af8-8343-f372280a75dd/salesforce_datorama/images/data/dato_data_mapping_viz_source.png)

Clicking a data stream displays the source fields that are mapped within that data stream. You can click the path at the top of the visualizer to go back to a specific source or stream.