You created PC-XFHW014-05-SM. You created that correctly.
However, if you are going to Purchase XFHW014-05-M from TAZ and then send them out to be painted at Pontovee, then you need a BOM so that the cost rolls up.
So a XFHW014-05-SM consists of a PC-XFHW014-05-SM and a XFHW014-05-M.
So a WO will need to be created.
I have set up the BOM for you.
Let me know if you have questions. Pueng- I can walk you through this by phone if you prefer