10000798 
Message
This operation can cause problems if open documents exist
Diagnosis
In the Document Settings window, on the General tab, in the For a Sales BOM in Documents, Display area, you have selected one of the following radio buttons:
Price and Total for Parent Item Only
Price for Component Items
However, this may cause problems if there are open documents in SAP Business One.
Procedure
Before you change the Bill of Materials setting, make sure that there are no open documents in SAP Business One.