Scheduling Agreement Performance Issues

Hi,

We are using Scheduling Agreements in Direct Material Purchasing.

Users have complained about some performance issues during loading of old SAs.

Is this a common problem?

Are there any guidelines from SAP about limitations of no. of items in one SA or no. of delivery schedules for one item in SA?

Are there any OSS notes released by SAP for this problem?

Thanks.

Regards,

Girish Page