Untitled

mutation {
    saveProductData (
      input: {
        submitType: "",
        regionId: "",
        tableName: "",
        rowsData: [
          {
            mdmId: "",
            recordId: "12",
            downstreams: [
              { dwnStrmId: "123" }
            ],
            productFields: [
              {
                // we know the recordId from the parent
                fieldId: "34",
                fieldValue: "value"
              },
              {
                fieldId: "78",
                fieldValue: "value"
              }
            ]
          }
        ]
      })
}