SAP Message V/104 - You can specify only one amount as unlimited

Diagnosis
Only one payment card can have an unlimited amount when several cardsare used in a transaction.
To specify an unlimited amount for a card, the "Limit to" indicator isleft blank.

System Response
The system does not allow you to specify an unlimited amount for morethan one card.

Procedure
Check whether the indicator has been set for the right payment card.