The PSA b71 2296 is nothing very special-it is based on ACEA A3/B4 requirements + some in-house tests. Mostly 5w-40..0w-40 ,normal SAPS levels,Gr.III oils.
Another excellent oil fulfilling this was Mobil SyntS 5w-40 now renamed to Mobil Superâ„¢ 3000 X1 5W-40 https://www.mobil.com/English-GB/Passenger-Vehicle-Lube/pds/GLXXMobil-Super-3000-X1-5W40
You can successfully use any 5w-40; 0w-40 ACEA A3/B4 MB-approved 229.5 oil ...