This feature enhances the design of external gift cards by ensuring they are activated, and funds are made available only after customer payment is received. Until the payment is received, the gift card remains inactive. Similarly, any balance addition requests on the existing gift cards are not issued unless the payment is completed. Once the payment is received, the Point of Sale sends the request to the payment terminal to activate or add balance to the gift cards. This design allows gift cards to be issued through self-checkout kiosks, providing greater convenience for customers. This functionality is enabled using the "Enable gift card balance post-payment completion" feature flag.