Problem in reading KWH in ATM90E32

[RamyaDidde]

I am using ATM90E32. I am reading voltage and current. i am reading Kwh in each phase. these Kwh are matching with my reference energy meter. But while i am reading total Kwh (APenergyT), it is not matching with my reference energy meter. Could anyone please help me out with it.

I am keeping PLconstH and PLconstL as given in the datasheet.

[RamyaDidde]

If no one is ready to respond here. Then what is the use of these forums and posting the issues.