# See sources and where they are used

Find the systems that send invoices to your workspace and see which integrations or branches use each one. You need access to Sources in the One Platform Invoice Portal.

## Open the source list

A **Source** is a system that sends invoices to Complyance, such as an ERP.

1. Sign in to One Platform and open the **Invoice Portal**.
2. Check the selected workspace, country and environment in the sidebar.
3. Select **Sources**.

You should see a row for each source available in the selected country and environment. The list shows **Name**, **Version**, **Usage**, **Status** and **Actions**. If there are no rows, it says **No sources found**.

![Sources table with three example Acme Trading systems, their versions, mapping and branch counts, and Invoicing, Active or Inactive status.](https://docs.complyance.io/_app/immutable/assets/sources-list.CZkfz3js.webp)

The Sources list shows each source's usage and status. Example data shown.

## Check where a source is used

Look at **Usage** for the number of integration mappings and branches linked to the source. **No active links** means neither is listed. The **Status** column can show **Active**, **Inactive** or **Invoicing**. Use the usage details to check the specific links behind a status.

1. Select the source name, or open its **Actions** menu and select **View Usage**.
2. Read **Integration Mappings** for mapping names and **Linked Branches** for company and branch names.
3. Select **Close** when you are done.

![Source Usage dialog for Acme Trading ERP, showing two integration mappings and three Acme Trading LLC branches in Dubai, Abu Dhabi and Sharjah.](https://docs.complyance.io/_app/immutable/assets/source-usage.BTZG5yAl.webp)

View Usage lists the mappings and branches behind the counts. Example data shown.

If the source has no links, the dialog says **No usage found**. You can add links and change source details in the Developer portal.

## If something looks wrong

- **A source is missing.** Check the selected workspace, country and environment. Sources are registered during company onboarding; a new source does not appear here until it has been added.
- **A mapping or branch is missing from Usage.** Open **View Usage** to check the names. If the link still needs to be added, use **Source management** in the Developer portal.
- **You cannot open Sources.** Check that your role has access to this page in the selected workspace.

Next, [manage a source and its links](https://docs.complyance.io/one-platform/developer-portal/source-management/).

Source: https://docs.complyance.io/one-platform/invoice-portal/sources/