https://connector.greywolf.com/p21/ws.aspx?APIKey=APIKEYHERE&result=json&v=1&api=PurchasingVendorInvoiceInsertUpdate&company_no=&vendor_id=&invoice_no=&invoice_date=&invoice_amount=&net_due_date=&terms_due_date=&terms_amount=&check_no=&check_date=&voucher_no=&ap_account_no=&cash_account_no=&description=&amount_paid=&terms_amount_taken=&paid_in_full=&date_created=&date_last_modified=&last_maintained_by=&po_no=&period=&year_for_period=&currency_id=&home_currency_amt=&reverse_flag=&voucher_type=&voucher_description=&memo_amount=&voucher_class=&voucher_reference_number=&period_fully_paid=&year_fully_paid=&approved=&branch_id=&terms_taken_account=&invoice_amount_display=&terms_amount_display=&terms_amount_taken_display=&amount_paid_display=&memo_amount_display=&payable_source_cd=&terms_id=&source_type_cd=&always_take_terms=&voucher_reversal_reason=&created_by=&disputed_flag=&previously_disputed_flag=&job_id_set_by_conversion_flag=&vendor_edited_flag=&handling_fee=&exported_flag=&freight_voucher_flag=&freight_amount=&freight_amount_display=&exchange_rate=&freight_dispute_flag=&iva_withheld_amount=&iva_withheld_amount_display=&iva_terms_amount_taken=&iva_terms_amount_taken_display=&external_claim_id=&voucher_reason_code_uid=&payable_source_uid=&payment_approved_flag=&terms_discount_pct=&notes=&print_notes=