The SAP Business One Relationship Map allows you to visualize relationship between documents and/or business objects at a glance.
From within the map you can double click on any document or business object to view its details. Different views include the document tree, transaction details, and related items.
The Relationship Map is available since SAP Business One 8.81 PL05.
For more information see : http://service.sap.com/smb/sbocustomer