For WeChat payment method there aren’t any test data available, but you can see how it works with the payment flow given below.
WeChat POS Payment Flow
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The customer selects his preferred currency from the list and enters his email address.
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The Customer is redirected to WeChat payment page.
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The Customer opens WeChat application and scans the QR code.
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The payment details are displayed and the customer confirms by using the payment password.
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The payment is confirmed.
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Upon completion of the payment flow, the customer is redirected back to your ReturnURL.
 
You can skip this step by sending in the initial POST the following parameters: SkipHPP=1 and CustomerEmail.





