The operator "descendant of" is not available when setting up cross-validation rule

Summary:

The operator "descendant of" is not available when setting up cross-validation rule, even after following these steps:

If you do not see the tree operator's options, then it means your setup is not sufficient.

To use hierarchies in your Cross-Validation Rules, you must strictly follow these prerequisite steps, otherwise, the specific tree operators will not work or may not appear:

1. Define the Hierarchy (Tree): Create your tree in the "Manage Trees" and "Manage Tree Versions" tasks.
2. Audit and Flatten: You must run the "column flattening" and "row flattening" jobs for the tree version. The hierarchy must be in an