Purchase order notes in ManagePurchaseOrderIn

Hi.

I am trying to create some internal notes for an external purchase order using web service ManagePurchaseOrderIn Just like in this case

I have trying to see this using QueryPurchaseOrderQueryIn and the payload was :

      <n0:PurchaseOrderSimpleByElementsResponse_sync xmlns:n0="http://sap.com/xi/SAPGlobal20/Global" xmlns:prx="urn:sap.com:proxy:LBZ:/1SAI/TAS05B6BFBB03520E661520:804">
         <PurchaseOrder>
            <PurchaseOrderID>179</PurchaseOrderID>
            <PurchaseOrderUUID>00163e75-38d7-1ee9-baeb-92513940e2e1</PurchaseOrderUUID>
            <SystemAdministrativeData>
               <CreationDateTime>2019-10-10T12:54:51Z</CreationDateTime>
               <CreationIdentityUUID>00163e74-9f5f-1ed9-85cd-1728b1208e06</CreationIdentityUUID>
               <LastChangeDateTime>2019-10-10T13:03:23Z</LastChangeDateTime>
               <LastChangeIdentityUUID>00163e74-9f5f-1ed9-85cd-1728b1208e06</LastChangeIdentityUUID>
            </SystemAdministrativeData>
            <CurrencyCode>AED</CurrencyCode>
            <TotalNetAmount currencyCode="AED">100.0</TotalNetAmount>
            <PartyBuyerPartyKey>
               <PartyTypeCode>200</PartyTypeCode>
               <PartyID>T1000</PartyID>
            </PartyBuyerPartyKey>
            <PartyResponsiblePurchasingUnitPartyKey>
               <PartyTypeCode>200</PartyTypeCode>
               <PartyID>P1100</PartyID>
            </PartyResponsiblePurchasingUnitPartyKey>
            <PartySellerPartyKey>
               <PartyTypeCode>147</PartyTypeCode>
               <PartyID>1000070</PartyID>
            </PartySellerPartyKey>
            <ApprovalStatusCode>1</ApprovalStatusCode>
            <DeliveryProcessingStatusCode>1</DeliveryProcessingStatusCode>
            <InvoiceProcessingStatusCode>1</InvoiceProcessingStatusCode>
            <InvoicingStatusCode>1</InvoicingStatusCode>
            <PurchaseOrderConfirmationStatusCode>9</PurchaseOrderConfirmationStatusCode>
            <PurchaseOrderDeliveryStatusCode>1</PurchaseOrderDeliveryStatusCode>
            <PurchaseOrderLifeCycleStatusCode>1</PurchaseOrderLifeCycleStatusCode>
            <DataOriginTypeCode>1</DataOriginTypeCode>
         </PurchaseOrder>
         <ResponseProcessingConditions>
            <ReturnedQueryHitsNumberValue>1</ReturnedQueryHitsNumberValue>
            <MoreHitsAvailableIndicator>false</MoreHitsAvailableIndicator>
            <LastReturnedObjectID>00163E7538D71EE9BAEB92513940E2E1</LastReturnedObjectID>
         </ResponseProcessingConditions>
         <Log/>
      </n0:PurchaseOrderSimpleByElementsResponse_sync>

I am not sure if it's possible to add a note using the maintain web service or not. Anyone can help?

Thanks in advance