In reply to Marion Bisserier:
Hi Marion
Most European countries have some form of qualification for rock climbing, and some have a few for different aspects of climbing. where some of them differer is whether you need one by law to practice and how much that is enforced.
So for example in the UK there is no legal requirement to hold any qualification, you just need to prove experience, but they do have some good qualifications suck as the RCI and MCI. Which is what most people hold.
For France on the other hand you need to by law hold a qualification that is recognised in France and they do enforce this. In Spain there is a legal requirement to hold recognised award but its down to different regions and they don't all enforce it.
Some awards such as mountain Guides are allowed to work in a range of countries.
I am not 100% sure about Portugal here is a link to their mountaineering federation, it looks like they do some awards but I couldn't see a climbing one just mountaineering -http://www.fcmportugal.com/AFList.aspx?p=td2
Or you could ask on the Portugal climbing Facebook page -https://www.facebook.com/groups/rockclimbingportugal/
If there is no Qualification or no legal need for one. Then they could just be using an experienced climber, Although its a bit checking saying they use qualified Guides, but then say they guides have no qualifications.
cheers Rob