# Set header template

This is a pre-built Action located under the **WebService List Element**. The functionality of this Action in Avo Assure is to populate the input field with values from the header defined in the stored template and apply them to the web service request. This enables required headers to be set dynamically for further use during web service execution.

## **Syntax**

**Input Value**: `N/A`

| Argument | Description    |
| -------- | -------------- |
| N/A      | Not Applicable |

**Output Value**: `N/A`

| Argument | Description    |
| -------- | -------------- |
| N/A      | Not Applicable |

### **Example: Setting a Header Template for a Web Service Request**

In this example, we are explaining how to apply a predefined header template to a web service request during API testing.

* **Action**: Set Header Template
* **Input Value**: N/A
  * This action does not require any input value. It applies a predefined header template to the web service request for subsequent API execution.
* **Output Value:** N/A
* **Logical Explanation**: The **Set header template** action does not require any input value. The action applies the configured header template to the web service request, ensuring that the required headers are included for the API call.

<figure><img src="/files/hHXftoWpDRsG9VP4dPZ7" alt=""><figcaption></figcaption></figure>


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