##### File > Convert to Collaborate Mode (or Collaborate) > Collaborate

# Scan for Errors

Genesys Agent Scripting Project Books can run in two modes: optimistic and pessimistic.

In pessimistic mode, the Project Book assumes that users are going to do things that conflict with each other, so the Project Book prevents this from happening. For example, this mode will prevent a user from adding a new reference to an object that a different user is currently attempting to delete.

In optimistic mode, it is assumed that these situations are very rare and not worth the cycle time.

Scan for Errors scans the Project Book for any errors that may occur when the Project Book is running in optimistic mode.

## Scan

This button causes the system to scan the Project Book for errors. If any errors are found, they are listed in the table shown above. If the system does not find any errors, a No Errors Found dialog box will appear.