We use planning contracts, and make the contract numbers the same as the job numbers. The suggestions come through similar to buy direct to job, except parts are consolidated by job. It works well for us. We don’t issue until they complete the operations (backflush) but you could issue when they arrive if you so desired. You wouldn’t have assembly or material sequence to go by, as it’s coming from inventory, but you at least would get a contract so you know what job it goes to.
This thread documents pretty well my learning about using planning contracts.