Goods Movement on Activity Confirmation

Hi,

We have 4 activities and some materials are attached to all of these activities. Our requirement is on activity confirmation the materials will be consumed which is happening properly. The problem is:

1. I can do activity confirmation of any of the activities. I want to restrict activity confirmation as per schedule or at least as per activity relationships.

2. I do not want to save confirmation unless the goods movement have no errors. Now system is allowing to save confirmation and putting failed goods movement under COGI which we do not want.

Any suggestions?

Thanks,

Harsh.