MD41 running result: sales order can't generated purchasing request

Hello Experts ,

I have met an issue under below scenario:

Material 123 in Plant A : procurement type F, special procurement H1 - stock transfer from plant B ( configure is ok). plant B is a production plant.

Expect to create sales order in plant A, and then generate the purchase request to plant B.

Currently issue : after I ran MD41 in plant A for material 123, the MD04 with no changes, only have sales order existed, no PR generated. the MD41 parameter also checked right as 2,2,1,2,2. so can not find what is the reason . please help , thanks!