Single shipment for Two materials

hi ,

the scenario is we have a situation

whre two material are made in two diffferent plants

but the customer orders these two materials in a single sales order

normally what happens is when ever tihis situation occurs, the material which is manufactured in plant B is sent to plant A and in plant A both the materials are consolidated and sent in a single shipment

we need to automate this process

when ever we enter both the materials the system needs to know that the second material which is manufactured in plant B needs to be sent to Plant A

and the delivery for the material in plant A has to wait until the material from plant B comes.

When you create sales order for two materials, the stock transfer should happen automatically.

Thanks

Munna