# Common parameters

### Public Request Parameters

| Parameter Name | Type | Required | Parameter Location | Parameter Value | Description |
| --- | --- | --- | --- | --- | --- |
| **Access-Token** | `String` | Yes | Header | B\_x-\_5aVeXNwl-4AB98s5xLVyg0fNzGf\_MuTpqtlBA | Used to authenticate API requests. Obtain an access token from the [Access Token Guide](/docs/app/building-blocks/authentication/oauth-flow). Pass it in the `Authorization` header for every request. |
| **Content-Type** | `String` | Yes | Header | `application`
`/json` | Indicates the media type of the request body. It tells the server how to parse the request and the client how to interpret the response. For more details, visit [Content-Type](https://www.geeksforgeeks.org/http-headers-content-type/). |

### Public Response Feilds

| Parameter Name | Type | Required | Parameter Location | Example Value | Description |
| --- | --- | --- | --- | --- | --- |
| **error** | String | No | Response Body | `{ "error": "store is not active" }` | Indicates an error encountered during the process. This field typically appears when the Access Token is missing or invalid. Example: `{ "error": "store is not active" }`. |
| **errors** | Array | No | Response Body | `{ "errors": ["No Context"] }` | A list of errors that occurred during the request processing. Example: `{ "errors": [ "No Context" ] }`. |
| **Request-Id** | String | Yes | Header | B\_x-\_5aVeXNwl-4AB98s5xLVyg0fNzGf\_MuTpqtlBA | A unique identifier for each request. It helps in identifying and debugging specific requests. |