Automatize Purchase requisitions to POs using contraints?

Dear all,

I was just wondering if it is possible to automatize the conversion of some PRs to POs using individually defined limitations?

I know one can use transactions ME59 or ME59N to convert PRs into POs for a plant, MRP controller, date etc. but this is simply to general for what we do.

Some examples of selection criteria I would like to use:

- Convert all PRs to POs which:

- Order Value <= 100 $

- Material Price <= 10 $

- Minimum 20 sales orders in last 12 months

I know you can automatize pre-defined PRs but is there a more comfortable way of realizing this?

Thanks for your help.

Cheers

Karsten