You see the generic red banner of death when attempting to install a new license file in the DLP Enforce Server.
The localhost log contains this entry when attempting to install the license file
Message: Unexpected exception while processing request:
javax.validation.ValidationException: HV000028: Unexpected exception during isValid call.javax.validation.ValidationException: HV000028: Unexpected exception during isValid call.
Caused by: org.springframework.dao.IncorrectResultSizeDataAccessException: query did not return a unique result: 2; nested exception is javax.persistence.NonUniqueResultException: query did not return a unique result: 2