• Yes, you can add Custom Fields into the Post using the API section.
  • Dashboard → Left side Menu → “Buyer/Contract” option → Click on “API Setup Integration”.
  • Buyer Setup/Integration Listing Page → Top Right side → “Add” button.
  • Select Lead Type → Select “Send using API” option.
  • “Post using API + Buyer Field Mapping” section → End of this section → “Custom Field” option.
  • And also, if you want to add one more Custom field, you can click on the “ + ” icon and get more fields for adding more custom fields.