> ## Documentation Index
> Fetch the complete documentation index at: https://docs.m3ter.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Reviewing Aggregation Details
When you've created an Aggregation, you can open the Aggregations details page which is designed to help you perform common Aggregation management tasks:
* [Reviewing Details](/guides/usage-data-aggregations/reviewing-aggregation-details#reviewing-details)
* [Reviewing Metadata](/guides/usage-data-aggregations/reviewing-aggregation-details#reviewing-metadata)
**Note: Reviewing details for other Aggregation types?** This topic explains how to review the details of a *Product Aggregation*. You can review the details of a *Global Aggregation* or *Compound Aggregation* in a similar way,
## Reviewing Details
You can use the *Aggregation details* page to review and manage the Aggregation set up.
**To review Aggregation details:**
1. In the **Metering** section, select **Aggregations**:
The **Aggregations** page opens and lists Aggregations by Product.
2. If you want to review the details of a Product Aggregation, search or filter the page by **Product**.
3. Select the hotlink text of the **Aggregation**. The **Aggregation details** page opens:
4. On this page, you can:
* Read-off the Aggregation's **Name** and **Code**.
* Use the hotlink text to open the details page of the **Meter** whose Data or Derived Field the Aggregation targets.
* Read-off:
* The method the **Aggregation** uses - such as **Sum**, **Minimum**, **Latest**, **Mean**, and so on.
* The **Unit** configured for the Aggregation, which will be used on Bill line items to indicates what the charge is for.
* The Aggregation's **ID** and **Copy** this to your clipboard.
* Check the audit data to see who **Created** and who **Last modified** the Aggregation.
**Note:** If the Aggregation is configured to use a **Custom SQL** method, then an additional **SQL** section is shown under **Aggregation details** showing the Custom SQL query used which you can **Copy** to your Clipboard.
## Reviewing Metadata
If you scroll down the **Aggregation details** page, you can review Aggregation metadata:
**Custom fields**. Any Custom fields created for the Aggregation entity are listed, and you can **Copy** the *String* or *Number* value of a Custom Field to your clipboard:
* If the fields have been created only at Organizational-level, then these values will be shown:
* If the fields have also been created for an individual Aggregation, then the values configured for those created at Organizational-level are struck out indicating clearly that the individual Aggregation's values will be used:
**External mappings**. Any External mappings set up for the Aggregation are listed:
* The **External system** and **External table** mapped to are shown - such as **NetSuite - Item** in the above example. The **External entity ID** mapped to is also shown.
* If a listed External mapping is linked to an Integration, under **Linked integration** a hotlink text will be shown which you can use to open the Integration.
* Under **Actions**, you can edit or delete the External mapping.
* If the Aggregation has multiple External mappings created for it, you can use *Search external mappings* to search by **External table** and **External entity ID** and filter the list.
* You can commence a workflow to **Create external mapping** for the Aggregation directly - see [Creating and Managing External Mappings for Accounts](/guides/end-customer-accounts/creating-and-managing-external-mappings-for-accounts) for an example.
**Integration runs**. If you've set up an integration that synchronizes the Aggregation with an external system, the date/time and status of the **Latest** integration run are shown. You can use a text hotlink to open details of this latest run or **View all runs**. See [Reviewing Integration Run Details](/guides/integrations/setting-up-integrations/reviewing-integration-run-details).