Can you guys tell me where I am going wrong here? Been looking at it too long I think.

=IF(C39<>'COR Log'!B5,IFERROR(INDEX('COR Log'!B$6:B$100,MATCH("Approved",'COR Log'!D$6:D$100,0)),""),(IFERROR(INDEX('COR Log'!B$6:B$100,MATCH("APPROVED",'COR Log'!D$6:D$100,0))

Thank you