Cannot finalize bank statement. Error: Enter valid currency

Dear,

Since we did an update of SAP B1 9.0 from PL10 to PL11 we have the following issue:
We cannot finalize a bank statement. We get a red error at the bottom saying: "Enter valid currency [10000404]". The first BP row is highlighted and in the Log column there is a message: "Failed to create payment:".

How can I solve this issue? Is this a bug introduced in PL11? We only use "euro" as currency, no foreign currencies are used in our system.

Thanks for your help.

Regards,

Pieter