Process for importing formulas with sub-formulas

A formula that contains sub-formulas must be imported in these stages:

Import the raw material items.
Create items, with no details, for sub-formulas. The sub-formulas are added as items to another formula. The item code must be the same as the formula that becomes the sub-formula at the next level. Include header data only; no details are required.
Import formulas that are made up of only the raw materials from stage 1.
Import formulas that are made up of raw materials from stage 1 and formulas from stage 3.
Import formulas that may contain sub-formulas from stage 4. If this formula is not going to be a sub-formula, do not include an item code for it in the header.

This example shows the stages of importing a sub-formula.


Examples	Description
`010`, `020`, `030`, `040`	Import raw material items: `010`, `020`, `030`, `040`.
Item `B-001`	Create items with a key code of sub-formulas. Add header data only. Import a raw material for `B-001`. This raw material is used as a sub-formula. Only the header is necessary; detail codes are not required.
Formula `B-001` Items `010`, `020`	Import formulas (`B-001`) that contain only raw material items (`010`, `020`).
Formula `F-001` Sub-formula `B-001` Items `010`, `020`	Import formulas (`F-001`) with sub-formulas (`B-001`) from the previous level and items. The item code `F-001` is in the header because it is going to be used as a sub-formula. Include item `030` in the `INGR` details. `B-001` is imported as both an item and a formula. The formula includes the code and version number.
Formula `F-002` Item `040` Sub-formula `F-001` Item `030` Sub-formula `B-001` in formula `F-001` Item `010`, `020`	Import formulas (`F-002`) with sub-formulas (`F-001`) from the previous level and items. This formula is going to be used as an item instead of a sub-formula. The item code `F-002` is NOT in the header because `F-002` is not going to be a sub-formula. Include item `040` in the `INGR` details.