What parameter should I send when I'm creating the payment link for receiving the callback on 'custom URL' when the payment is made?
Thank you for reaching out to us.
If you have already opened an account in wallee you can use the following api references in order to see all parameters that are sent via payment links.
Option one creating a payment link:
Option two creating a transactions first and building a payment page:
If you have any further questions, please do not hesitate to contact us.