[Skunkworks] Help with registering a URL with safaricom mpesa callback system

Dear Listers. I am attempting to register a URL with safaricom mpesa callback paybill payment system. I am following this article https://www.tekfansworld.com/how-to-develop-mpesa-integration-to-website-usi... and https://developer.safaricom.co.ke/docs However I am getting this error message [image: Inline image 1] Any tips or help will be appreciated. Kind Regards Peter Muchemi