Error - Payment amount is greater than invoice amount

Hello,

I am trying to create an incoming payment using the DIAPI and I am getting the error -

"Payment amount is greater than invoice amount Code(-10)"

I am able to create the incmong payment from SBO client with the same values succesfully. What does this error message mean?

Here are my mappings -

On the header -

CardCode, DocNum, DocDate, CashSum

On the lines -

DocEntry(Invoice), SumApplied, DiscountPercent

Please help.

Thanks and Regards,

Sheetal