Reimbusement amount in pr05

Dear All,

After entering expenses in pr05, in summation of reimbursement (field Name: SUM_REIMBU) one expense type is calculation double (for remaining expense type, those are working good)

eg. when i enter MAIL (expenses type) for Rs. 1 the in SUM_REIMBU it is showing Rs. 2. But again in posting of trip it is appearing Rs.1 and remaining calculation it is Rs. 1.

Then why it is showing Rs. 2 in PR05 ( SUM_REIMBU)

Thanks

Amol