workcenter type = "vendor" for subcontracting ?

Is it neccessary to have workceter group (& workcenter) type as “Vendor” for subcontracting?

I have posted the production order by keeping it as “machine” the subcontracting flow still works.

Can any body answer?

In this way you link a route to a work centre and specific vendor for the service item on the referenced purchase order. However there are many options of “subcontracting” in AX technically. I would say if it works for you use it.