Smart App Config fails if more than "x" number of devices are selected on the config page

[johnconstantelo]

Does this discussion help?

FAQ: Limits and Guardrails (max # of automations, devices, etc)

It seems like in recent months more and more land mines have been discovered that could kill the automations for somewhat power users. The most recent is the 250 “behaviors” limit, which @kieranlavin apparently stepped into. See this post I know of other “rate limits and guardrails” disclosed here I wonder how many other booby traps are there that we don’t really know about?

See the “Devices” section:

https://smartthings.developer.samsung.com/docs/rate-limits.html