!ISBLANK(Service_Incident_ID__c )
&&
ISPICKVAL(Status, 'Closed')
&&
(ISPICKVAL( Repair_Class__c,"" )
||
ISPICKVAL(Quality_Code__c ,"")
||
ISPICKVAL(Quality_Type__c,"")
)
!ISBLANK(Service_Incident_ID__c )
&&
ISPICKVAL(Status, 'Closed')
&&
(ISPICKVAL( Repair_Class__c,"" )
||
ISPICKVAL(Quality_Code__c ,"")
||
ISPICKVAL(Quality_Type__c,"")
)