Enumerated domain indicating the purpose of a data item in the context of
GeneXus Cognitive API for custom models.

| Train |
The data item is used for training. |
| Test |
The data item is used for testing. |
| Validation |
The data item is used for validation. |
This domain is available as of GeneXus 16 upgrade 6.
HowTo: Build a custom model for GeneXus Cognitive API