Each level of licence has a set of criteria defined by ICAO. These are recommended (not mandatory) and any National Authority (FAA/EASA/UK CAA/DGCA etc) can set their own licence standards. These may be lower or less arduous than the ICAO measures and are referred to as “sub ICAO”. If it meets or exceeds all the requirements it’s referred to as ICAO compliant.
The LAPL stated above has a lower hour requirement for qualification and missing some of the ICAO necessary “must have” elements of training. This places restrictions on where it can be used or is “accepted” around the world.
HTH
DD