## 3 Set Up Using Booster Automation
A booster is a set of guided interactive steps that enable you to select, configure, and consume services on SAP BTP to achieve a specific technical goal. Boosters automate processes that otherwise require a high number of manual steps, such as onboarding applications like SAP Subscription Billing.
The Onboard SAP Subscription Billing [page 8] booster helps you onboard an SAP Subscription Billing tenant in a new or existing subaccount, including services such as Event Mesh and Price Calculation depending on the selected configuration. If you use the booster, most of the steps mentioned under Set Up Using Manual Steps [page 20] are performed automatically.
##  Recommendation
We recommend using the booster for onboarding SAP Subscription Billing tenants.
If you use the booster for onboarding a production tenant or a test tenant that requires a production-like setup , note the following:
- All users added with Administrator or Developer roles get full authorization for administrative and development tasks as well as full access to the SAP Subscription Billing user interface. If this contradicts your compliance rules for production tenants, add users manually or remove authorizations prior to productive use of the tenant.
- The booster doesn't support configuration of custom identity providers. You need to replace the default identity provider SAP ID service manually. We strongly recommend configuring your SAP Cloud Identity Services - Identity Authentication tenant, which can also act as a proxy for the corporate identity provider. For more information, see User Management (section Identity Providers for User Authentication ).
- The booster creates an API client for accessing SAP Subscription Billing APIs with all API scopes. You can manually configure API access with only selected scopes depending on your business needs. For more information, see Update a Service Instance [page 49].
##  Caution
- During the booster configuration, you must decide whether you want to create a new subaccount or select an existing subaccount to which you want to add SAP Subscription Billing. If you make the wrong selection for your use case, you isn't run into issues further in the onboarding process. For more details on which configuration to select, see step 6 in the section Onboard SAP Subscription Billing [page 8].
- You can include the option EU Access in your contract, in which case processing of personal data is restricted to EEA/Switzerland, provided you create your subaccount (tenant) in the region eu11 . Creating a subaccount in the region eu11 without the option active in your contract is not sufficient to restrict processing to EEA/Switzerland.
After the configuration is completed and the booster is started, the booster assigns entitlements, subscribes chosen applications, and creates the relevant service instances and the associated service keys automatically.
When the booster has finished all the processing steps, you can access the user interfaces of SAP Subscription Billing and applications such as Event Mesh and Price Calculation, depending on your chosen configuration. In addition, you can use the created service key to get OAuth access tokens for the created service instances.
##  Note
To run the booster on an existing subaccount, make sure you have the Subaccount Admin role (part of the Subaccount Administrator role collection).