To test your checkout safely without triggering real charges or inventory holds:

• Stop at the payment summary step: Configure your synthetic journey to add a product to the basket, fill in shipping details, and assert that the payment form loads, stopping before the final submit click.
• Use a sandbox or test discount code: If you want to test order confirmation, run the journey against a staging environment or use a 100% test coupon / sandbox payment gateway.
• Exclude monitor traffic from analytics: Filter test runs so automated checks do not skew your conversion rate metrics.