3421130 - When creating production order , the quantity of the component is not as per the quantity maintained in BOM. 

When creating production order and performing BOM explosion, the quantity of the component is not as per the quantity maintained in the valid BOM. 

SAP S/4HANA Cloud

There is value maintained for  'Component Scrap (%)' of the component.
This can be maintained in MRP view 4 in material master or the BOM. 
If component scrap has been entered in the BOM, this value applies. Otherwise, the value specified in the material master record is used.
If there is also assembly scrap for a higher-level assembly, the system adds together the two types of scrap.

Standard behavior. 

Production order, BOM, quantity, component, Component Scrap, process order, 2 times, twice , double  , KBA , PP-SFC-EXE-2CL , Order Execution (Public Cloud) , LO-MD-BOM-2CL , Bills of Material (Public Cloud) , Problem

SAP S/4HANA Cloud Public Edition all versions ; SAP S/4HANA Cloud all versions