An easy answer if getting pressurised to sign anything you are not happy with by some overbearing manage muppet is to say
"Heres the book mate, you want it signed then you and you alone sign it"
One of two reactions will develop.
1) If he can sign it (Licensed and approved) then be it on his head and what you do then is up to you. (A quick call to QA maybe)
or
2) If he cant sign it (unlicensed or approved) then tell him to "****** off" as you will only sign it when you are satisfied that all is complete and SAFE.
If he is pressurising you to sign the box, then one could deduce that he obviously can't in which case #2 applies.
It is your licence and your livelyhood.He has no rights to ask you to place these on the line just so he can appease whoever is pressurising him. You never know he might learn a thing or two as well.
Try it, I have and it works