Blocked Storage loc in sales order

Hi There,

Plant in ECC is having 8 Sloc out of which 3 are blocked.

When i create a sales order for 2 material with unblocked SLoc and save, same is appearing in APO for both material.if i change the Sloc for one of the material to blocked one,sales order is getting disappear for both the materials.

As per my requirement only the blocked one should be disappear from APO while saving.

Could you please advise on this?

Thanks,

Krishna