If a new Data Definition was introduced with new product version and a custom Data Definition with the same name already exists in database the custom Data Definition needs to be renamed.
Applies to all Data Definitions.
Detects problems caused by product changes.
On fixing this issue automatically, the existing Data Definition will be renamed to Ud_DDTechn. Name. This will probably harm customizings that are using this data definition. Please check such customizings after update with highest care.