Need help with API header issue

I integrated a payment API to my bubble app using the API connector all the variables are in the header, but now it keeps showing an error that the X reference ID (UUID) is duplicated, It would have been easy to update the ID if it was a parameter but the API need it in the header, I need help on how I can update the X reference ID when running the API from my bubble app and it is in the API header.

Remove the private checkbox.