# Document Management use cases

Source: https://developer.avalara.com/avatax-dm-combined-erp/document-management/dm-use-cases/

# Document Management use cases

This section describes the use cases that you must complete and include with your funcational review demo. Each use case provides a description of the task as well as an example REST API call.

**Advice:** The APIs in these use cases require your `companyId` in the request URL. If you don't know your `companyId`, you can retrieve it using one of the following methods:

-   Run the [QueryCompanies](https://developer.avalara.com/api-reference/avatax/rest/v2/methods/Companies/QueryCompanies/). The response will include the `id` for each company in your account.
-   Select your company in the AvaTax UI. The `companyId` will be the second set of digits in the URL. For example: https://admin.avalara.com/cup/a/{accountId}/s/{companyId}/.

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