Checkout improvement starts with clarity and consistent order states. Customers should understand the item, total and delivery, while the merchant has reliable evidence of payment. Test both the visible steps and the behavior after returning from the payment provider.
Inspect required information and its placement
Request the information needed to fulfill the order and explain fields that may be unclear. Test phone, address and numeric input on mobile, including error messages for missing information.
Preserve valid information when another field fails. Show service coverage and delivery cost at an appropriate point, and test an unsupported address so the shopper receives an understandable explanation.
Make the total and available methods clear
Show items, quantities, discount, shipping and the final amount for review before confirmation. The store and payment provider should request the same amount and clearly identify the currency.
Display methods that are active and tested. For a device-dependent wallet, test its appearance on supported hardware and the alternative flow when unavailable. A static logo is not proof of readiness.
Checkout test matrix
Scroll the table horizontally to see all columns.
| Case | Expected outcome | Evidence |
|---|---|---|
| Success | Matching order and amount | Provider transaction identifier |
| Decline | Clear message and retry | No falsely paid order |
| Delayed return | State can reconcile | Notification matching |
| Confirmation refresh | Same order displayed | No duplicated charge or event |
Review declines and repeat attempts
Test successful and declined payments, a delayed provider return and a refreshed confirmation page. Do not mark an order paid from an untrusted browser event or duplicate a charge or purchase event.
Have the technical team review transaction matching and delayed notifications. Tell the customer what the system actually knows and how to obtain help if a bank shows a charge without an order confirmation.
Measure the reasons behind incomplete checkout
Segment by stage, device and payment method without collecting unnecessary sensitive information. A device-specific failure can suggest a technical issue, while exits after delivery cost appears can suggest an offer problem.
Follow confirmed orders, settlements and returns after the change. In Mollkom, inspect store configuration, provider evidence and the order record together instead of treating a success page as the end of verification.
Common questions
Should testing begin with a live charge?
Start in the provider’s test environment, then use an authorized limited live check after activation.
Is order confirmation the same as settlement?
No. Payment confirmation and transfer to the merchant bank are separate stages governed by the provider agreement.
Your next step
Continue with the payment-method guide, or register and start your store. Apply the process to a small sample before expanding.
Sources and references
Information reviewed on 27 September 2026. Service availability and provider terms can change.