1. Created new Data Object using editor
2. In source view of data object, added method ("addCode") to add item to field that is a List
3. Error though during validation.
4. Removed added method and saved.
5. Validation error remained "Rule Compilation error addCode cannot be resolved or is not a field"
6. Deleted data object
7. Added fields in editor
8. Validation error remained for "addCode" where there is no "addCode" in the entire repository anymore.