Geo Enrichment not available

Hi

I have created a model using SAP BW connection.

This uses multiple global dimensions, and my Origin has correct format of latitude and longitude as attribute.

But at the modelling stage i do not get any option to get this converted into a Location.

Please see in attached image, there is no option for me to convrt the origin lat and long into a Location Coordinate

Can you please advise what could be the reason?