Notes

For versionable objects (functions and messages), the Copy name of all members of the group of versions must be the same. This is because all versions in the group should match with the same object in a target model, otherwise, the concept of versions does not exist. A copy of any one of the versions in the group using YCPYMDLOBJ should match with the same object in the target model.
The Copy name of each versionable object is validated against all other versions in that object's group. If it differs from any of the other versions a report notifies you that the group is not set up correctly. To recover, you must adjust the Copy name of one of the versions with the Change Model Object Description (YCHGMDLOD) command, which updates all versions in the group to have the same Copy name.
For non-versionable objects, such as access paths, fields, and conditions the program compares the Copy name with the Object name of the object. If they differ, the Copy name is set to be equal to the Object name and the update action is reported.