ModeShape should be able to be used by local JTA clients when configured to use repository sources that are already JTA-compatible. For example, when ModeShape is deployed within an application server, using JCR from within EJBs requires that ModeShape be able to participate in local transactions (making all changes to the underlying stores in a JTA-compliant fashion). Since not all connectors work with JTA-compatible sources, only some configuration must be provided.