Migrate from A73 to E812

What is route for migration from A73- E812 ? What does Oracle recommend ? How can I find information about this process. Could you share some field experience.
IS direct migration possible using some custom data migration solutions ? Or do we first need to move from A73 to ERP8 and then upgrade to E812.

Please provide information

There is a Direct Migration data conversion document for customers upgrading from A73-E812. THis should be used if your company has never used OneWorld in the past.

If you have any instances of Oneworld (Xe-8.0) then you have to use the End Coexistence/Xe-E812 upgrade path.

There is documentation on these conversions on the knowledge garden: http://www.peoplesoft.com/corp/en/iou/upgrade/e1_upgrd_resources_plan.jsp

If you are new to EnterpriseOne you might want to enlist the help of consulting services in order to better understand this process.