To display the cards registered for a customer on the payment page, you just have to fill in the id and label of the cards to display in storedCardData when calling Creates a payment session. .
Example with a registered card
[...]
"storedCardData": [
{
"Id": "406f8b08096f49dba6ddaf472f7ea5e5",
"Label": "test"
}
]
[...]
Example with several registered cards
[...]
"storedCardData": [
{
"Id": "406f8b08096f49dba6ddaf472f7ea5e5",
"Label": "test"
},
{
"Id": "406f8b08096f49dba6ddaf472f7ea5e5",
"Label": "testbis"
}
]
[...]