diff --git a/adapter/model.go b/adapter/model.go
index e010520..93c28d8 100644
--- a/adapter/model.go
+++ b/adapter/model.go
@@ -127,9 +127,10 @@ const (
 
 // pos apm payment provider declaration
 const (
-	PosApmPaymentProvider_YKB_WORLD_PAY PosApmPaymentProvider = "YKB_WORLD_PAY"
-	PosApmPaymentProvider_APPLEPAY      PosApmPaymentProvider = "APPLEPAY"
-	PosApmPaymentProvider_GOOGLEPAY     PosApmPaymentProvider = "GOOGLEPAY"
+	PosApmPaymentProvider_YKB_WORLD_PAY               PosApmPaymentProvider = "YKB_WORLD_PAY"
+	PosApmPaymentProvider_YKB_WORLD_PAY_SHOPPING_LOAN PosApmPaymentProvider = "YKB_WORLD_PAY_SHOPPING_LOAN"
+	PosApmPaymentProvider_GOOGLEPAY                   PosApmPaymentProvider = "GOOGLEPAY"
+	PosApmPaymentProvider_GARANTI_PAY                 PosApmPaymentProvider = "GARANTI_PAY"
 )
 
 // payment status declaration
diff --git a/tests/payment_test.go b/tests/payment_test.go
index 881d4f5..bbbeab2 100644
--- a/tests/payment_test.go
+++ b/tests/payment_test.go
@@ -533,7 +533,7 @@ func TestPayment_CompleteApmPayment(t *testing.T) {
 	}
 }
 
-func TestPayment_InitPosApmPayment(t *testing.T) {
+func TestPayment_InitYkbWorldPayPosApmPayment(t *testing.T) {
 	request := adapter.InitPosApmPaymentRequest{
 		Price:           1.25,
 		PaidPrice:       1.25,
@@ -566,6 +566,39 @@ func TestPayment_InitPosApmPayment(t *testing.T) {
 	}
 }
 
+func TestPayment_InitGarantiPayPosApmPayment(t *testing.T) {
+	request := adapter.InitPosApmPaymentRequest{
+		Price:           1.25,
+		PaidPrice:       1.25,
+		Currency:        craftgate.Currency_TRY,
+		PaymentGroup:    craftgate.PaymentGroup_LISTING_OR_SUBSCRIPTION,
+		ConversationId:  "foo-bar",
+		PaymentProvider: craftgate.PosApmPaymentProvider_GARANTI_PAY,
+		CallbackUrl:     "https://www.your-website.com/callback",
+		Items: []craftgate.PaymentItem{
+			{
+				Name:       "Item 1",
+				Price:      1,
+				ExternalId: "1",
+			},
+			{
+				Name:       "Item 2",
+				Price:      0.25,
+				ExternalId: "2",
+			},
+		},
+		AdditionalParams: map[string]string{
+			"integrationType": "WEB2APP",
+		},
+	}
+	res, err := paymentClient.Payment.InitPosApmPayment(context.Background(), request)
+	_, _ = spew.Printf("%#v\n", res)
+
+	if err != nil {
+		t.Errorf("Error %s", err)
+	}
+}
+
 func TestPayment_CompletePosApmPayment(t *testing.T) {
 	request := adapter.CompletePosApmPaymentRequest{
 		PaymentId: 123,