CATS via ESS - how to add WBS description field

Hi folks,

I've configured a new time profile which we will be using to integrate with Project System. We can enter the WBS number via the portal but I would also like to show a field which will automatically default to the description associated with the wbs number.

There seem to be a few user exits available but I'm not sure which one to use.

CATS0009 CATS: Customer-Specific Text Fields in Data Entry Section

Will this allow me to add the WBS description field as an additional input field via CAC2?

Any help would be much appreciated.

thanks,

Ann