diff --git a/4.2.-op-request=booking_update.md b/4.2.-op-request=booking_update.md
index cf860ff..3f53f94 100644
--- a/4.2.-op-request=booking_update.md
+++ b/4.2.-op-request=booking_update.md
@@ -62,7 +62,15 @@ https://sharee-zr01.example.tld/APIjsonserver?request=booking_update&bike=FR1540
                "longitude" : "7.825490",
                "latitude" : "47.976634"
             },
-         "rental_description" : {
+            "bike_type" : {
+               "category" : "cargo",
+               "engine" : {
+                  "manufacturer" : "dummy"
+               },
+               "wheels" : "2"
+            }
+          },
+          "rental_description" : {
                "tarif_elements" : {
                  "4" : [
                      "Max. Gebühr",