My alarm panel is going into alarm when entering the premises

[Cutepaul]

hi i have a Honeywell Galaxy 2-20-V15 version 1.5 security system and was working fine but the engineers code was lost so as i needed to add more circuits,i defaulted the panel back to factory settings and now have an enginers code . I have reprogrammed the panel and included new circuits and everything appeared to be fine, but the problem is the system is setting fine but on unsetting it immediatly goes into alarm
This is curcuit 1001 programmed ,final and timed each way 30 seconds/entry and exit
I cannot find anything in the programming to explain the problem but the log indicates code - ENT T/0 can any one advise please ?
regards Paul