Requester limit reached?

Hi there,

I have the Enterprise version of SDP Ondemand and cannot add any additional users. I currently have 163 requesters, but I cannot find where the limit is set.

Here is the error I am getting from the logs:

System Log Message :
Exception while adding the Requester :FullName:Blah ,EmployeeID:null ,Title:User added from util class. ,Description:null ,Email: blah@blah.com ,Phone:null ,Mobile:null ,DeptId:null ,JobTitle:null ,smsID:null
Module : Admin
Sub Module : Requesters
Type : Error
Action : Add
Occurred At : Mar 28, 2018 12:46 PM
Probable Cause :
com.adventnet.iam.IAMException: IAMError:O116:Cannot add user - Max limit exceeded

Funnily enough, I was able to add users in the past, and got to a bit of 200 with no problems, so I deleted some old accounts to see if that would fix it, but it didn't.