Oracle Solution for Error ora-40227

Solution for Oracle Error ORA-40227

ORA-40227: invalid transformation attribute

What triggered the Error:

Transformation list provided to CREATE_MODEL has duplicate or NULL attributes. Case ID or target attribute has attribute_subname that is not NULL. Attribute provided to ALTER_REVERSE_EXPRESSION does not exist in the model.

What should we do to fix it:

Remove NULLs and duplicates and fix case ID and target attributes or provide a valid attribute for a given model.