recon account wise report

HI

SAP GURU'S

I am facing issue is balances difference between FS10N and S_ALR_87012172 Customer reconciliation account wise report,

I will explain clearly.

User selecting in FS10N reconciliation account 1220001. He is seeing quarterly report from April to June 2014,

in that suppose Carry forward bal from 2013 is  200000

                               Debit balance is 150000 ,

                              Credit balance is 100000

                               Cumulative bal                            250000 is there                     

Now my problem is balance not matching in s_alr_87012172 report  DEBIT And CREDIT Balances is matched.But the carry forward balances is showing different amount with negative value, And my Cumulative Bal also showing negative value. Instead of showing 250000 with positive value ? Please suggest.

Regards,

Ramesh