Running the delete utility (ucybdbcc) fails with the following error in the log file:
20180427/145406.369 - U00036002 The two databases do not have identical database versions.
This issue occurs when the two connection strings for the source and the target database have different versions of objects (e.g. source is 11.2, target is 12.0). The databases must have the same version in order to work successfully.
Comment out the current source database connection string if deleting from the Target database. Make the source and target connection strings point to the same database.