diff --git a/VRAPoten-API.md b/VRAPoten-API.md
index fecbea8..0d3f604 100644
--- a/VRAPoten-API.md
+++ b/VRAPoten-API.md
@@ -287,7 +287,8 @@ Content-Length: 0
 
 ###### Creating appliance maps
 Execute the VRAPotenTask with the item code of the cropfield as parameter inside {code}.
-Use the input map code inside {itemCode}.
+Use the input map code inside {itemCode}, specifying an inputCode is optional.
+In case of no specified inputCode the BOFEK data is looked up and if it could not be found the task gives an error.
 
 > Request
 ```javascript