On BPS1 installations using the ZWW interfaces you will sooner or later get an Oracle error at reception with ZwwRecvSupplyOrders. The problem is that since short time the language code of new suppliers does no more get set properly in the partners master data on Migros GD.
The problem is addressed with the fix C for BPS 1.88.0 which you can find in the download area at http://ibk-software.com/bps-v1-software. For the cases where no proper language code is set in the GD partners masster data, German will be assumed.
Kind regards,
Peter Koch
IBK Software AG