When you are using ATP features, the system automatically calculates the availability of items to fulfill orders by specified due dates. The system calculates the ATP for most kinds of items directly. However, for configured items and family items, the system considers component and planning information in its ATP calculation.

See QAD Manufacturing User Guide for information on how ATP is used in the planning process.

For configured items, ATP is based on the component item with the smallest ATP quantity. The system does not check cumulative ATP of the configured item itself, since configured items are typically used in an assemble-to-order environment.

However, the system does use the ATP enforcement level associated with the parent item in Item Master Maintenance (1.4.1) or Item-Site Planning Maintenance (1.4.17) to determine how to process order lines with inadequate ATP. It disregards the setting of ATP Enforce for individual item components in favor of the enforcement level (Warning, Error, or None) set for the configured item.

See ATP Settings for Items.

For family items, the system can check the ATP of all members in the family to determine item availability. You must enter Yes in Family ATP in Item Master Maintenance or Item-Site Planning Maintenance for every family item and member you want the system to verify for availability. The system then accesses the ATP of all items in the same family with dates outside the material requirements planning (MRP) time fence to fulfill the specified line-item order.