diff --git a/pkg/deviceclaimingserver/enddevices/ttjsv2/messages.go b/pkg/deviceclaimingserver/enddevices/ttjsv2/messages.go
index c000254e1d..a6c5e35f35 100644
--- a/pkg/deviceclaimingserver/enddevices/ttjsv2/messages.go
+++ b/pkg/deviceclaimingserver/enddevices/ttjsv2/messages.go
@@ -14,6 +14,10 @@
 
 package ttjsv2
 
+import (
+	"context"
+)
+
 // ClaimData contains information about the claim.
 type ClaimData struct {
 	HomeNetID string  `json:"homeNetID"`
@@ -38,6 +42,25 @@ type ClaimRequest struct {
 	KEK                  *KEK    `json:"kek,omitempty"`
 }
 
+// Apply applies the context to the request.
+func (req ClaimRequest) Apply(ctx context.Context, c Component) (ClaimRequest, error) {
+	deriv := req
+	if req.HomeNSID != nil {
+		deriv.HomeNSID = stringValue(*req.HomeNSID)
+	}
+	if req.RegenerateOwnerToken != nil {
+		deriv.RegenerateOwnerToken = boolValue(*req.RegenerateOwnerToken)
+	}
+	if req.Lock != nil {
+		deriv.Lock = boolValue(*req.Lock)
+	}
+	if req.KEK != nil {
+		kek := *req.KEK
+		deriv.KEK = &kek
+	}
+	return deriv, nil
+}
+
 // ErrorResponse is a message that may be returned by The Things Join Server in case of an error.
 type ErrorResponse struct {
 	Message string `json:"message"`
diff --git a/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs.go b/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs.go
index 2e15c46245..50e95e30a6 100644
--- a/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs.go
+++ b/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs.go
@@ -123,7 +123,7 @@ func (c *TTJS) Claim(ctx context.Context, joinEUI, devEUI types.EUI64, claimAuth
 		"url", reqURL,
 	))
 
-	claimReq := &ClaimRequest{
+	claimReq := ClaimRequest{
 		OwnerToken: claimAuthenticationCode,
 		Lock:       boolValue(true),
 		HomeNetID:  c.config.NetID.String(),
@@ -132,6 +132,10 @@ func (c *TTJS) Claim(ctx context.Context, joinEUI, devEUI types.EUI64, claimAuth
 	if c.config.NSID != nil {
 		claimReq.HomeNSID = stringValue(c.config.NSID.String())
 	}
+	claimReq, err := claimReq.Apply(ctx, c)
+	if err != nil {
+		return err
+	}
 	buf, err := json.Marshal(claimReq)
 	if err != nil {
 		return err
diff --git a/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs_test.go b/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs_test.go
index 022420f7b3..08515ba517 100644
--- a/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs_test.go
+++ b/pkg/deviceclaimingserver/enddevices/ttjsv2/ttjs_test.go
@@ -99,7 +99,7 @@ func TestTTJS(t *testing.T) { //nolint:paralleltest
 	client1 := ttjsv2.NewClient(c, fetcher, ttjsv2.Config{
 		NetID: test.DefaultNetID,
 		NSID:  &homeNSID,
-		ASID:  "localhost",
+		ASID:  client1ASID,
 		JoinEUIPrefixes: []types.EUI64Prefix{
 			supportedJoinEUIPrefix,
 		},
@@ -176,7 +176,7 @@ func TestTTJS(t *testing.T) { //nolint:paralleltest
 	client2 := ttjsv2.NewClient(c, fetcher, ttjsv2.Config{
 		NetID: test.DefaultNetID,
 		NSID:  &homeNSID,
-		ASID:  "localhost",
+		ASID:  client2ASID,
 		JoinEUIPrefixes: []types.EUI64Prefix{
 			supportedJoinEUIPrefix,
 		},