Guillaume, I just read up on the exit documentation, following the pointer you provided.
And I noticed the exit is called in supervisor mode, key 0. If you are indeed relatively new to assembler programming, then coding an authorized exit such as IEFU86 might not be the best option for learning. I suggest you have a senior colleague review your code before you start testing it. A bug in an exit like this might bring the system down :-( Kind regards & success learning assembler! Abe === Op 08/07/2023 om 16:10 schreef Guillaume Boesel: > Hi Abe and Pieter > Thank you for your replies. > > "I hope you're using CS on the ST of the pointer to the obtained area." > Sorry for my newbie question but what means CS and ST ? > > "Most areas that are shared have a documented serialization requirement." > I didn't see anything about serialization (or I misunderstood it) in the > documentation and in the SYS1.MACLIB(IFAEXITP) > > > https://www.ibm.com/docs/en/zos/2.5.0?topic=exits-iefu86-smf-record-exit#IEFU86__pspu86 > > > It works well with my own Storage Obtain/Release but if the provided workarea > can be used, it should be better. > > Guillaume
