I'am trying to register a feature dataset with branch versioning but I am constantly getting the error message
ERROR 999999: Something unexpected caused the tool to fail. Please refer to the error help for potential solutions, or contact Esri Technical Support http://esriurl.com/support.
Invalid Multibranch registration [UTARC.StructureJunction_1]
Failed to execute (RegisterAsVersioned).
When i delete the feature class StructureJunction_1 from the feature dataset, I get the same error message for another feature class. If I delete that also, I get the error message for the next feature class in the feature dataset and so on.
I am using ArcGIS Pro 2.2.4. The database is an oracle database and my SDE connection file is created with branch versioning enabled.
Can anybody give me a hint what I am doing wrong?