# Fields tab

![Fields tab in MQTT Consumer](/files/6DR0TCwN9L7PjKsXJsoD)

Use this tab to define the fields in the record format.

| Option          | Description                                                                                                                                                                                                                                                                              |
| --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Input Name**  | <p>The input name is received from the MQTT streams. The following are received by default:</p><ul><li><strong>message</strong></li></ul><p>The individual message contained in a record.</p><ul><li><strong>topic</strong></li></ul><p>The category to which records are published.</p> |
| **Output Name** | The **Output Name** can be mapped to subscriber and member requirements.                                                                                                                                                                                                                 |
| **Type**        | This will always be a String. This field applies to the **Message** and **Topic** input names.                                                                                                                                                                                           |


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