We are trying to migrate workflow packages from 6.0 to 6.1 and getting the following error while installing
Caused by: org.apache.jackrabbit.oak.api.CommitFailedException: OakConstraint0030: Uniqueness constraint violated at path [/] for one of the property in [jcr:uuid] having value 3ed8a5c9-e095-4e9b-aeb0-98e9uss7
We were not able to find the above uuid in the target system?
All this exception means is that this jcr:uuid already exists in the CRX.
Have a look here
There was one workflow model xml in the package which was having hardcoded jcr:uuid value. I removed that jcr:uuid manually from the XML and reinstalled the package successfully. The uuid value in the XML was conflicting with one of the existing node IDs in the CRX.