Let’s say you are running a holiday promotion where customers can order from a limited stock of 3  gift box types:

• Cozy Cocoa Box

• Winter Wellness Kit

• Festive Treat Pack

The form includes:

• A choice field with the above gift box options with choice availability configured.

• A payment field is configured to require online payment for the selected box.

The form is set up so that once a customer selects their preferred box, they must proceed to online payment (via a supported payment gateway) to complete the order.

Multiple customers, one smooth system  

Let’s imagine 2 different customers: Anna and Ben interact with this form around the same time. Here’s what happens step-by-step.

Anna orders a Cozy Cocoa Box  

Anna opens the form and sees:

1. Cozy Cocoa Box – 5 available
   
2. Winter Wellness Kit – 3 available
   
3. Festive Treat Pack – 4 available
   

Ben also wants a Cozy Cocoa Box  

1. Cozy Cocoa Box – 4 available
   
2. Winter Wellness Kit – 3 available
   
3. Festive Treat Pack – 4 available
   

Anna completes her payment  

Ben’s payment fails  

Why this combo works so well  

1. It prevents overbooking or overselling limited items.
   
2. It ensures fairness: If someone is already in the middle of paying for a box, others can’t “snatch” it before the payment completes.
   
3. Orders are only confirmed after successful payment.
   
4. Failed or abandoned payments instantly free up stock. Others can purchase the item without delay.
   
5. You don’t need to monitor or update stock manually.
   

You can check the choice availability status and the payment status in the All Entries section of  a form.