When running more than on of the same strenuous business process you may run into the following error: "An error occurred before executing the process 'XXXX' : This process is currently being run by XXX."
You can not run more than one of the same business process at the same time. Schedule these business processes to be ran at different times.
Steps to Duplicate
1. Start a business process. 2. Have the same business process ran by another user. 3. Note the Error Message occurs.