Certain Snmpcollector profiles are not exiting the pending state. They remain continuously pending and there are no errors in the SNMPCollector log.
You will need to increase the hoursBetweenRediscovery in the snmpcollector.cfg to allow the profile to be finished discovering and applying templates.
Alternatively, setting hoursBetweenRediscovery = 0 disables the function. In most customer environments you do not need to rediscover already existing devices often, if ever.