Routing / Prod Version - Issue

Gurus

I have one doubt or may be i am not fully clear about it......

We have materials which are externally procured i.e. F & so there is no routing for them. But while doing settlement; we get error that "cannot find master recipe / routing for the order"......Why is it so? Was there some mistake while costing or how to rectify this

Seconly we have few materials with type E which have 2 BOM's & 2 routings but there was no production versions and while settlement it gave same error "cannot find master recipe / routing for the order"......

We have already settled and closed it but how will this impact from finance point of view & how to resolve them for future

Can you please comment on above issues and clear the doubt

Rgds