coupon

You can create coupon codes using Conditions feature. Here is what they do:
1. Add a text field question to your form and ask for Coupon Code
2. Add a Condition for each coupon code so that you can hide/show any questions on the form

For more guidelines, please check the below workaround given to other users on this forum

http://www.jotform.com/answers/102289-create-a-coupon-redemption-Form

http://www.jotform.com/answers/106116-coupon-validation

Lets know if you need further assitance on this feature

You can do this by setting up conditions on the field where you want the voucher to be keyed-in.

1. Goto My Forms page.

2. Select Condtions.

3. Select Show / Hide a from field.

4. Select the conditions you want.

Hope this helps. Thank you