A customer may have enough tokens for a service and still be unable to complete the intended action because the payment route requires another resource. The BNB Chain developer guide identifies BNB as the asset used for network transaction fees. For an ALFA service design on BSC, that creates a practical onboarding question before checkout begins.
Explain the separate requirement
The interface should distinguish the service amount from any network cost associated with the customer's chosen route. The explanation should appear before the final approval, not only after an attempted action fails. A user unfamiliar with the network needs to understand why holding the service token may not by itself make every transaction immediately executable from their wallet.
Avoid an incomplete headline
A quoted service price should not imply that all associated transaction costs are included unless the arrangement actually provides for them. If a programme covers a cost, the conditions should be clear. If the customer pays it separately, the journey should give a useful indication and explain which party controls that charge at the point of execution.
Plan the low-balance experience
A customer with insufficient resources should receive a safe, understandable next step. The product should avoid pushing them toward an unfamiliar external transaction simply to continue. It can preserve the order while explaining the requirement and any supported alternatives, allowing the customer to decide whether to proceed without losing the commercial context of the service they selected.
Measure completed purchases
The relevant product metric is whether customers can complete an informed service purchase, not whether they can reach the wallet approval screen. ALFA's utility experience becomes more approachable when the full funding requirement is explained early. Clarity about a small transaction cost can prevent a disproportionate amount of confusion during a customer's first practical encounter with the programme.
