Apply Vouchers to Prepayment discrepancy.

Hello,

Available Amount is > 0.  But, when user tries to apply voucher to prepaid they get the message "Total Available Amt that can be applied to this prepaid voucher is..........(7250,656) and it won't apply.  While researching this I ran a query on VCHR_PPAY_XREF summing APPLIED_AMT_PPAY and the applied sum matches to the Gross Amount.  Thus, the message seems valid.  Why is there an "Available Amt" showing?  Is there a place the user can see the actual amount applied?  Please see attachment for supporting documentation.

Thank you for your expertise.

Greg