# Parameters tab

![Parameters tab in REST client](https://3411831820-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAYwCj9fPr1B2pjC11IOQ%2Fuploads%2Fgit-blob-89c6621c2f5423b10b0cebb625deaa306f510c1f%2FPDITransStep_RESTClient_ParametersTab.png?alt=media)

Use the **Parameters** tab to define parameter values for **POST**, **PUT**, **DELETE**, and **PATCH** requests. Parameters for the **GET** method should be directly a part of the URL.

The parameters table contains the following columns:

| Column        | Description                                                                |
| ------------- | -------------------------------------------------------------------------- |
| **Parameter** | The field from incoming PDI stream that contains the parameter information |
| **Parameter** | The name of the outgoing PDI field from this step                          |

Use the **Get** button to populate the table with fields from the PDI input stream.

**Note:** The parameters table and the **Get** button are only available when the **HTTP method** in the **General** tab is set to **POST**, **PUT**, **DELETE**, or **PATCH**.