https://userapps.support.sap.com/sap/support/knowledge/en/3070712
3070712 - Field BOMIsToBeDeleted not updated when using API API_BILL_OF_MATERIAL_SRV;v=0002 and...
The API API_BILL_OF_MATERIAL_SRV;v=0002 and Entity MaterialBOM called with Operation PATCH but the field BOMIsToBeDeleted is not updated