Internal reconciliation - automatic No data was found

Hi Experts.

I have a question about internal reconciliation. - automatic

The total of ref3 is zero.

When I run internal reconciliation -automatic with matching key ref3,

no data was found.

Could anyone answer about it?

[Internal reconciliation - manual]

Balance Zero

[ Internal reconciliation - automatic]

sap version : 9.2 pl03

Thanks.

EJ