what is the Max limit of rule inputs in an expression or Interface?

Hi Max,

may I asked stupidly: Whats the reason for that question?
Within several years of implementing appian I never got an issue there.

i didn't faced an issue actually it is just for curiosity. like if we create large rule inputs then which are the areas it will effect like speed, complexity, just that thing Richard

one big factor for me is maintainability. I would take a hard number as limit, but try to have always as less as possible but as many you need for a maintainable application. 
That principle is not just for rule inputs but for your code, processes etc in total.

I think you should never have this limitation. I always try to have a CDT with the input data for the interface or rule.

AFAIK there's no actual limit (well, eventually there's a practical storage limit of the rule itself on disk which I suspect would involved millions of rule inputs!). But the more rule inputs your provide the more complex the testing will become, and that'll take more time, and be error prone, and Appian is all about low-code, speed and quality! Keep your objects (and the rule inputs to those objects) small!