Violations of a single policy by the same string in multiple places
within a field is reported in one instance of this class and only one
exemption needs to be filed.
Violations of a single policy by two different strings is reported
as two separate instances of this class.
e.g. If 'ACME' violates 'capitalization' and occurs twice in a text ad it
would be represented by one instance. If the ad also contains 'INC' which
also violates 'capitalization' it would be represented in a separate
instance.
Errors returned when Authentication failed.