EUPEXR Summary Discrepancy between SAP & Bank for Zero-Decimal Amounts

We're producing this idoc (EUPEXR) as a summary of a batch of PAYEXT. The problem we have is that the way SAP summarizes the amounts and the way the bank summarizes is different. It appears that they are using the raw database data. For example,

Amounts

350.00 USD

400 JPY

SAP provides a sum of 35400 = (35000 + 400)

whereas the bank calculates 75000 = (35000 + 40000).

SAP is In the edi record received by the bank they "assume" a decimal if none exists and defaults to two positions. So when they read 400 they calculate it as 40000.

Note: this doesn't affect the amount that the bank processes in the transaction. They still process 400 JPY. This only affects the way they calculate the sum total.

Does anyone know of a way in SAP where we can correct how it calculates the sum total?