Meaning: The split operation or the splitter in the profile graph, could not be retrieved. Possibly, the split operation or the splitter in the profile graph, need to be updated or the connection is no longer valid.
Recovery: Verify that the profile, split operation or the splitter in the profile graph, are not on the To Do List. Verify, that the connection is still valid and that the profile and its splitter are OK. Make corrections as needed. Otherwise contact your support.