Problems when posting a new Entity from UI5 to XSOData Service

Hi,

I am trying to add a new Entity by posting it from ui5 to the corresponding xsodata service in hana cloud. Sadly I get the error "Request contains properties that do not exist in entity" as shown in the screenshot.

The Entity City is defined as follows:

Entity City{

       key CITYID: Integer;

       NAME: Types.StdString;

       ZIPCODE: Integer;

       STATEABBREVIATION: Types.StdString;

       COUNTRY: Association to Country;

};

The Type City is defined as follows:

type City {

            CITYID: Integer;

            NAME: Types.StdString;

            ZIPCODE: Integer;

            STATEABBREVIATION: Types.StdString;

            COUNTRY: Integer;

};

I tried to add it like i did before with another Entity, where I didn't get any errors. The only difference is the association.Can you Help me? Do you need further informations?

Best regards,

Juergen