Knowledge BasePayment Methods and PSP Gateway Introduction

Payment Methods and PSP Gateway Introduction

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External Payment Flow

There are a few possible flows that a payment can take in the case of an external payment module. These flows and the status that can result from them are described below.

Successful payment - Confirm before ok page

User is redirected to the PSP
User pays for his order at the PSP
Confirm page is called by the PSP
- Basked is deleted
- Order mail will be send
- Stock will be deducted
- User will be redirected to the ok page (ordersubmit.aspx); this page will have no actions

Payment status will be 'Paid / In progress'

Successful payment - ok page before confirm

User is redirected to the PSP
User pays for his order at the PSP
Basket is deleted
Order mail will be send
- User will be redirected to the ok page;
- Confirm page is called by the PSP
Stock will be deducted

Payment status will be 'Paid / In progress'

Failed payment - Without Confirm

User is redirected to the PSP
User cancels order or an error occurred
User is redirected to the failure page
Note: this is an exceptional case were the PSP is not working or wrongly configured. In normal cases confirm page is called

Payment status will be 'New'

Failed payment - With Confirm before failed page

User is redirected to the PSP
User cancels order or an error occurred
Confirm page is called with failure status; this status is mapped to the 'cancelled' status in Commerce
User is redirected to the failure page

Payment status will be 'Cancelled', basket remains intact and no mail is send.

Failed payment - With Confirm after failed page

User is redirected to the PSP
User cancels order or an error occurred
User is redirected to the failure page
Confirm page is called with 'failure' status; this status is mapped to the cancelled status in Commerce

Payment status will be 'Cancelled', basket remains intact and no mail is send.

Started payment - User cancels payment

User is redirected to the PSP
User cancels order
Confirm page is called with 'failure' status; this status is mapped to the 'cancelled' status in Commerce. (not shown in image)
User is redirected to the failure page

Payment status will be 'Cancelled', basket remains intact and no mail is send.

Started payment - User closes browser at PSP

User is redirected to the PSP
User closes browser and leaves PSP

Payment status will be 'New', basket remains intact and no mail is send.

Successful payment - Confirm page not called!

This is a rare case if the PSP provider stopped working or the confirm page does not work in this case the status of the order will remain 'New' till the confirm page will be back online. If it is back online the call to the confirm page will be repeated.

Successful payment - But Ok Page not called (browser hangs)

User is redirected to the PSP
User closes browser and leaves PSP
Request will be made to confirm
Status will be set to 'Paid'

These flows are generally the same for each PSP. When creating a custom implementation of a payment service provider you need to be sure to keep all these possible flows in account.

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Knowledge BasePayment Methods and PSP Gateway Introduction

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Sana Software – e-Commerce for Microsoft Dynamics

Updated: September 2011