ESRI ArcGIS SDE databases feature the use of versioning for controlling database updates. Version control is the default editing environment in enterprise ArcSDE geodatabases and supports complex editing workflows required by enterprise GIS systems. It allows for multiple users accessing and editing data simultaneously in enterprise ArcSDE geodatabases. Every enterprise ArcSDE geodatabase has a default version named DEFAULT that is owned by the administrator. The version always exists and cannot be deleted or renamed. The DEFAULT version is typically maintained and updated over time by incorporating changes to it from edits posted to other versions that have gone through an approval process. HxGN EAM GIS integration supports versioning but for reasons just presented, it only reads the DEFAULT version when synchronizing data between the two systems. In view of this, a key decision is the process by which GIS data revisions will be checked into production and become part of the DEFAULT version. This is critical because revisions cannot be checked into the DEFAULT version during synchronization with HxGN EAM. The synchronization process must be able to lock the data for editing. If it cannot, then the synchronization will fail. It is important to schedule map updates by GIS personnel outside of the hours set aside for manual or auto data synchronization with HxGN EAM.