X12 Settings Reference This section provides reference information for X12 business hosts.For information on settings for the business process (EnsLib.MsgRouter.VDocRoutingEngineOpens in a new tab), see Settings of a Virtual Document Routing Process. Settings for X12 Business Services – Provides reference information for settings of an X12 business service. Settings for X12 Business Processes – Provides reference information for settings of an X12 business process. Settings for X12 Business Operations – Provides reference information for settings of an X12 business operation.