There is an error on DD620

Name:         filesystemNVRAMDataLoss
Message:    Filesystem can't be enabled due to potential NVRAM mismatch
Severity:      ALERT
Class:          File System
Event ID:     EVT-FILESYS-00015
Description: Filesystem cannot be enabled because of NVRAM mismatch. This can happen because of an improper headswap or NVRAM card replacement operation.

How can this be fixed