Inactive BOM still can create Production Order

Hello,

we can still do CO01 and CO41 and save it to create a production order even the BOM was been inactive already, and the material we use has Selection Method in MRP4 set as 3 = Selection only by production version.

but as we check the PO 100021563 it is master data tab we see it pick production version ACA, which has BOM alternative 1 (status 02 already) this is inactive so it must not pick by the production order this production version. the active alternative BOM is 4 today and in the MRP4 its production version is ACD this is valid for us for the material to be produce a PO.

how it happen when we create the PO 100021563 pick inactive alt bom by means of picking a production version ACA? please help us for this one how could we limit this material when doing CO01 or CO41 will not pick production version with alt BOm inactive already.

please SIVA and R.BRAHAMANKAR

thanks