Error Sync PriceDiscountList in CCO

Hi Community,

i effort to sync the PriceDiscountList successful Customer Checkout. I got an Error Message successful the Log-File "During synchronization a caller entity was recovered done a narration that was not marked cascade". 

Can anyone assistance maine to find retired what the occupation is?

The Warning Button successful CCO is bare and with nary further information.

BackEndSystem SapBusinessOne - SQL - Customer Checkout Version 2.0 FP20 PL00

Thank you precise overmuch - Best Regards Daniela