Yes, once an airline or airlines finds out you are accessing PNR's that you did not create AND ticket, even if they are yours, you will be electronically cut off by that airlines(s) from viewing them. (We know just a little about this.)

And having Sabre access does not, by itself, give you the ability to ticket. You must then become an acredited agency and then get permission from the airline(s) to create tickets for their flights.