Total number of requestors allowed in the system?

Total number of requestors allowed in the system?

Is there a limit to the number of requestors the system will allow? I know that there are for assets and technicians - which makes sense.
But, are you limited anywhere to the number of requestors (those you can log tickets against) in the system?
And as a follow-up, assuming there is a fairly large number to this question, is there a limit to the number of requesters that would actually be allowed to access the system (to either check on a ticket or solution)?
Thank you.

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