# Step 1: Define a Platform Event

Create a custom platform event named `Order Event`. The steps in this quick start use this platform event.

1. From Setup, in the Quick Find box, enter `Platform Events`, and then select **Platform Events**.
2. On the Platform Events page, click **New Platform Event**.
3. Complete the standard fields, and for the description, enter `Example event for the Pub/Sub API client`.
4. Save your work.
5. To add a field, in the Custom Fields & Relationships related list, click **New**.
6. Follow the custom field wizard to set up these fields.
   - Field label: `Order Number` (API name: `Order_Number__c`), field type: Text(18)
   - Field label: `City` (API name: `City__c`), field type: Text(50)
   - Field label: `Amount` (API name: `Amount__c`), field type: Number(16,2)