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# Apply a Policy Template
Apply a policy template to an API.
## Prerequisites
- You have a thorough understanding of policies and the various flows they can be attached to. For more information, see [Policies](policies-7e4f3e5.md).
- You are familiar with the different types of policies supported by SAP Integration Suite. For more information, see [Policy Types](policy-types-c918e28.md).
- You have the payload of the policy you want to create.
## Context
You are applying a policy template and want to apply it to an API proxy.
> ### Note:
> If you attempt to apply a policy template that includes a Statistic Collector policy with the Statistic name='clientIP' to an API proxy, the application of the policy template will fail because 'clientIP' is a reserved word in Cloud Foundry API Management analytics. To address this issue, we have introduced a default prefix, "**custom\_**", which will be automatically appended to all custom metric names. For example, if the Statistic name is "clientIP", it will be displayed as "**custom\_clientIP**".
> ### Remember:
> If any changes are made to the existing policy, the API proxy must be redeployed.
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## Procedure
1. Log on to the Integration Suite.
2. Choose the navigation icon on the left and choose *Configure* \> *APIs*.
A list of APIs appears in the catalog.
3. In the list, click the API for which you want to apply the policy template.
4. On the details screen, choose *Policies*.
5. On the Policy Editor screen, choose *Edit*-\>*Policy Template* -\>*Apply*.
6. Select the policy templates you want to apply from the *Apply Policy Template* window.
You can click a template to view all the policies available and also select the required policies in that template.
> ### Note:
> When applying the policy template, any default fault rules or a post-client flow available within the policy template will also be appended to the API proxy.
7. If you want to copy only the policies and not the flows, choose *Copy Only*. Otherwise, choose *Apply* to copy both polices and flows.
**Related Information**
[Create a Policy Template](create-a-policy-template-c5d1872.md "Create a policy template add it to an API proxy.")
