I am trying to put an add contact form on my website. Getting "The requested URL returned error: 400" error on submission.
I am using a fancybox iframe to display the page, but that should not effect the security. The only information I want from the contact form is first and last name and email address. I set everything else to an empty string. I also don't want an option with which list. trying to seet that to a fixed value.
let me know hwat other information you need.
Could I see either the payload (XML) that you're sending to us when you get the 400 error, or the code you're using to connect with our API?
API Support Specialist