Check if the indicator exists and is callable via the INE API.
Indicator ID can be found in the url under the 'indOcorrCod' query parameter when browsing the website.
Example: https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_indicadores&indOcorrCod=0010003&contexto=bd&selTab=tab2