Error: Invalid Element gst_no, Invalid Element gst_treatment, Invalid Element place_of_contact

Error: Invalid Element gst_no, Invalid Element gst_treatment, Invalid Element place_of_contact

so i am creating a new contact post request and i want add gst infomation when amount is above 50000  and  if pass gst info in request body then i get this errors > Error: Invalid Element gst_no, Invalid Element gst_treatment, Invalid Element place_of_contact and this is the body data i am passing  {
            contact_name: orderData.customerName,
            company_name: orderData.customerName,
            email: orderData.email,
            contact_type: 'customer',
            currency_code: 'INR',
            gst_treatment: 'business_gst',
            gst_no: 'i did used proper gst no but i have removed it for now',
            place_of_contact: 'GA',
            payment_terms: 15,
            payment_terms_label: 'Net 15',
            billing_address: {
                attention: orderData.customerName,
                address: '123 Demo Street',
                city: 'Chennai',
                state: 'Tamil Nadu',
                zip: '600001',
                country: 'India',
                phone: '+91-9876543210'
            }
        }