Unable to find the New Property 'URL.headers.ApiKey' in BTP Destination creation

[suman_patra1]

Hi Colleagues,

I am following this learning https://learning.sap.com/learning-journeys/develop-full-stack-applications-using-productivity-tools-.... 
I am stuck at 'Task 4: Configure an SAP Business Accelerator Hub Destination'
I am unable to find option of this Property 'URL.headers.ApiKey'  in Additional Properties while creating a destination in BTP cockpit. Is there any setting needs to be done by Admin?

Regards,
Suman

[Dinu]

You can type the new property. It need not be in the list. 

[suman_patra1]

thank you !

[Dinu]

You can type a new property in the combo box; it need not be in the list.