Sales Agreement Release Quantity

Hi,

We have min/max release quantity at the sales/blanket agreement line level. Do we have something at the header level, like min/max release amount? We have a requirement to limit the combination of blanket agreement lines to a specific max quantity. For e.g. if the BSA has 5 lines with 5 different items, the order referencing this BSA should be able to order a max of say 'x' units only based of the BSA. The 'x' units can be any combination of those 5 blanket agreement lines. Do we have such an option? If not, is there an enhancement logged for