MRP and reorder on their own

The MRP job runs an automatic supply plan every night, firms the proposals inside the firm fence, and carries a bought one through to a purchase order. The reorder job prices its requisition and orders it within a limit.

• The first MRP run makes a supply plan called Automatic MRP. Its horizon starts today on every run (Horizon days on the rule, 90 by default). Your own supply plans are not touched.
• A buy or make proposal needed within the firm fence (Days on the rule, 7 by default) is firmed into a requisition or a works order.
• A requisition worth no more than the value limit is ordered from the planned or default supplier. Where an approval rule covers it, it is submitted to its approvers instead; it never goes round them.
• The reorder job now prices the requisition at the item's standard cost and counts open purchase orders as on order. Within the limit it is ordered from the item's default supplier (Item, Purchasing); otherwise it is submitted for approval.