ERP Ar Open Item → Invoice

{
  "position": {
    "table": "canonical.invoice",
    "group_field": "open_item_no",
    "amount_field": "open_amount"
  },
  "contributes_to_object": {
    "owners": [
      {
        "via_source_object": "erp_customer_invoice",
        "business_key_field": "invoice_no"
      },
      {
        "via_source_object": "erp_customer_credit_note",
        "business_key_field": "credit_note_no"
      }
    ],
    "match_field": "open_item_no",
    "target_type": "Invoice"
  }
}