AIF invoice export - SalesInvoiceDS warning

Hi!

When I export the invoice with AIF, I receive the following warning:

The dataset ‘SalesInvoiceDS’ contains a definition for the Field ‘GiroType’.

This field is missing from the returned result set from the data source.

The file is exported correctly, but in the 'Exceptions' form I see the warning. I receive the warning only in productive system. I can't reproduce it on my development system.

Any ideas?

Thanks.