error while creating loans for Indian Payroll

Hi,

Done with configuration of company loans for one employee. Able to create the loan info type 0045. but if i checks repayment plan it is showing only for 2 months and showing error message as follows:

Difference calculation is not possible, 01.09.2011 > 01.08.2011

loan amount is Rs.50000, repayment starts from next month on wards, repayment amount is Rs.5000 taken in the month of june,

1st month it is deducting Rs.5000, loan balance is Rs. 45000 and in 2nd month it is deducting Rs.10,000 instead of 5000 and it is showing balance of Rs.35000 and the error message Difference calculation is not possible, 01.09.2011>; 01.08.2011.

require inputs

regards

Chowdary