Our Baan system can not generate planned MRP purchase order from last week. Before that, everythings ok.
And I found the problem is: If there's planned DRP orders for the item, system will not generate planned MRP purchase order for the production order requirement(not for the first production order requirement.For the prod.order requirement after that, planned purchase order generated, no problem).
If I cancel the planned DRP orders or transferred the planned DRP orders, and re-run MRP, it will generate planned MRP purchase orders, no error.
We didn't change any parameters during the period.
Who can help us? It's very urgent! Thank you in advance!