Schema Versioning
A version is an edited copy of a schema. Each time a schema is edited, a new version is created, but the original schema remains intact for future use.
The system adds a date and time stamp to each version that can be used for version identification.
The default schema is the version of the schema that is available at the start of a business process. You can specify a default schema only if you have two or more versions of the same schema. One version must be selected as the default.