045079: At least one category field has more than 255 unique values.


Each field provided in the Category field parameter can have at most 255 categories, and every unique nonnull value in the field defines a category. At least one provided field has at least 256 categories.


Identify the fields with more than 255 categories and either remove them or reduce the number of unique values. You can use the statistics panel in a Data Engineering view to see the number of unique values in each field.