diff --git a/flows/actions/testdata/transfer_airtime.json b/flows/actions/testdata/transfer_airtime.json
index 33a4f69f6..46a215a04 100644
--- a/flows/actions/testdata/transfer_airtime.json
+++ b/flows/actions/testdata/transfer_airtime.json
@@ -197,6 +197,7 @@
                 "created_on": "2018-10-18T14:20:30.000123456Z",
                 "step_uuid": "59d74b86-3e2f-4a93-aece-b05d2fdcde0c",
                 "transfer_uuid": "9688d21d-95aa-4bed-afc7-f31b35731a3d",
+                "external_id": "2237512891",
                 "sender": "tel:+17036975131",
                 "recipient": "tel:+12065551212?channel=57f1078f-88aa-46f4-a59a-948a5739c03d&id=123",
                 "currency": "USD",
@@ -240,7 +241,7 @@
                 "created_on": "2018-10-18T14:20:30.000123456Z",
                 "step_uuid": "59d74b86-3e2f-4a93-aece-b05d2fdcde0c",
                 "name": "Reward Transfer",
-                "value": "3",
+                "value": "2237512891",
                 "category": "Success"
             }
         ],
@@ -296,6 +297,7 @@
                 "created_on": "2018-10-18T14:20:30.000123456Z",
                 "step_uuid": "59d74b86-3e2f-4a93-aece-b05d2fdcde0c",
                 "transfer_uuid": "9688d21d-95aa-4bed-afc7-f31b35731a3d",
+                "external_id": "",
                 "sender": "tel:+17036975131",
                 "recipient": "tel:+12065551212?channel=57f1078f-88aa-46f4-a59a-948a5739c03d&id=123",
                 "currency": "",
diff --git a/flows/actions/transfer_airtime.go b/flows/actions/transfer_airtime.go
index 79df5a195..4cc6318ae 100644
--- a/flows/actions/transfer_airtime.go
+++ b/flows/actions/transfer_airtime.go
@@ -96,7 +96,7 @@ func (a *TransferAirtimeAction) transfer(run flows.Run, logEvent flows.EventCall
 }
 
 func (a *TransferAirtimeAction) saveSuccess(run flows.Run, step flows.Step, transfer *flows.AirtimeTransfer, logEvent flows.EventCallback) {
-	a.saveResult(run, step, a.ResultName, transfer.ActualAmount.String(), CategorySuccess, "", "", nil, logEvent)
+	a.saveResult(run, step, a.ResultName, transfer.ExternalID, CategorySuccess, "", "", nil, logEvent)
 }
 
 func (a *TransferAirtimeAction) saveFailure(run flows.Run, step flows.Step, logEvent flows.EventCallback) {
diff --git a/flows/events/airtime_transferred.go b/flows/events/airtime_transferred.go
index ab5355121..f243c4ec6 100644
--- a/flows/events/airtime_transferred.go
+++ b/flows/events/airtime_transferred.go
@@ -3,7 +3,6 @@ package events
 import (
 	"github.com/nyaruka/gocommon/urns"
 	"github.com/nyaruka/goflow/flows"
-
 	"github.com/shopspring/decimal"
 )
 
@@ -20,6 +19,7 @@ const TypeAirtimeTransferred string = "airtime_transferred"
 //	  "type": "airtime_transferred",
 //	  "created_on": "2006-01-02T15:04:05Z",
 //	  "transfer_uuid": "552cd7ee-ccba-404d-9692-c1fe3b8d57c5",
+//	  "external_id": "12345678",
 //	  "sender": "tel:4748",
 //	  "recipient": "tel:+1242563637",
 //	  "currency": "RWF",
@@ -42,6 +42,7 @@ type AirtimeTransferredEvent struct {
 	BaseEvent
 
 	TransferUUID  flows.AirtimeTransferUUID `json:"transfer_uuid"`
+	ExternalID    string                    `json:"external_id"`
 	Sender        urns.URN                  `json:"sender"`
 	Recipient     urns.URN                  `json:"recipient"`
 	Currency      string                    `json:"currency"`
@@ -55,6 +56,7 @@ func NewAirtimeTransferred(t *flows.AirtimeTransfer, httpLogs []*flows.HTTPLog)
 	return &AirtimeTransferredEvent{
 		BaseEvent:     NewBaseEvent(TypeAirtimeTransferred),
 		TransferUUID:  t.UUID,
+		ExternalID:    t.ExternalID,
 		Sender:        t.Sender,
 		Recipient:     t.Recipient,
 		Currency:      t.Currency,
diff --git a/flows/services.go b/flows/services.go
index 07159f8e4..f8fa6844b 100644
--- a/flows/services.go
+++ b/flows/services.go
@@ -158,6 +158,7 @@ const (
 // AirtimeTransfer is the result of an attempted airtime transfer
 type AirtimeTransfer struct {
 	UUID          AirtimeTransferUUID
+	ExternalID    string
 	Sender        urns.URN
 	Recipient     urns.URN
 	Currency      string
diff --git a/services/airtime/dtone/service.go b/services/airtime/dtone/service.go
index c0d9450e8..44a279768 100644
--- a/services/airtime/dtone/service.go
+++ b/services/airtime/dtone/service.go
@@ -99,7 +99,7 @@ func (s *service) Transfer(sender urns.URN, recipient urns.URN, amounts map[stri
 	transfer.Currency = product.Destination.Unit
 	transfer.DesiredAmount = amounts[transfer.Currency]
 
-	// request synchronous confirmed transaction for this product
+	// request asynchronous confirmed transaction for this product
 	tx, trace, err := s.client.TransactionAsync(string(transfer.UUID), product.ID, recipientPhoneNumber)
 	if trace != nil {
 		logHTTP(flows.NewHTTPLog(trace, flows.HTTPStatusFromCode, s.redactor))
@@ -112,6 +112,7 @@ func (s *service) Transfer(sender urns.URN, recipient urns.URN, amounts map[stri
 		return transfer, fmt.Errorf("transaction to send product %d on operator %d ended with status %s", product.ID, operator.ID, tx.Status.Message)
 	}
 
+	transfer.ExternalID = fmt.Sprintf("%d", tx.ID)
 	transfer.ActualAmount = product.Destination.Amount
 
 	return transfer, nil