Sage 300 does not lock database records. Instead the system uses Audit Stamps to prevent two workstations from making changes to the same record at the same time.

The Audit Stamp indicates the date and time the record was added or last updated and is updated each time the record is saved. In a network environment, the system will only save changes to a record if the current audit stamp for the record is the same as the audit stamp when the record was first read by the workstation user.

Some key areas of Service Manager implement a Resource Locking mechanism. Document Entry uses this facility to prevent more than one user from editing a document at the same time.