Understanding Why a Version Is Required
JD Edwards EnterpriseOne ships pre-built real-time events to which you can subscribe. You can use the pre-built real-time events out of the box, you can customize an existing JD Edwards EnterpriseOne real-time event, or you can create a new real-time event that is specific for your enterprise.
If you find it necessary to change an existing real-time event and the change affects the interface, Oracle recommends that you create a version of the original real-time event and change the version as necessary. This recommendation takes into consideration JD Edwards EnterpriseOne updates and upgrades. During an update or upgrade, any modifications that you made to an existing JD Edwards EnterpriseOne real-time event will be overwritten by the new JD Edwards EnterpriseOne code. A real-time event version helps to minimize merge complications when your system is upgraded.