By the way, using recorrect=never is highly deprecated. Using LQA instead is recommended.
]]>I'm trying to perform an IRC calculation in Gaussian 16. IRC in the forward direction ran successfully but the calculation ended abnormally for the backward direction.
My route section reads: 
#p irc=(calcfc,recorrect=never,maxpoints=12,recalc=4) um06l/gen geom=connectivity scf=xqc Integral(Grid=UltraFineGrid) NoSymmetry
The last few line of the output file is as follows:
 No NMR shielding tensors so no spin-rotation constants.
 Leave Link  601 at Fri Mar 31 10:02:04 2023, MaxMem=   536870912 cpu:              17.9 elap:               1.0
 (Enter /apps/scratch/compile/g16/l9999.exe)
This type of calculation cannot be archived.
 TWO ROADS DIVERGED IN A WOOD, AND I--
 I TOOK THE ONE LESS TRAVELED BY,
 AND THAT HAS MADE ALL THE DIFFERENCE.
                       -- ROBERT FROST
 Job cpu time:       4 days 12 hours 53 minutes 52.7 seconds.
 Elapsed time:       0 days  5 hours 27 minutes 28.6 seconds.
 File lengths (MBytes):  RWF=   1311 Int=      0 D2E=      0 Chk=     24 Scr=      2
 Normal termination of Gaussian 16 at Fri Mar 31 10:02:06 2023.
I cannot figure out what went wrong. Can someone please suggest what caused the error and how to get rid of it!
Regards,
Anjali