Create token
Authorize
Capture

Link card (create_token)

Techspec 2.4.2: create a card token. No funds are held yet — holding funds is the Authorize step (auth_w_token).

Return URL sent to VNPAY: https://sanglv.click/vnpay/preauth/return
Cancel URL: https://sanglv.click/vnpay/preauth/return
Order information
Letters/digits only, max 32 characters, must be unique.
đ
The create_token API does not send an amount. The actual amount is entered at the Authorize step.
Per techspec: English or Vietnamese without diacritics.
User & language
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