Hello,
I am working with Configure‑to‑Order (CTO) in IFS Cloud and I am trying to dynamically calculate the quantity of a by‑product in the shop order, based on the quantity of the main product.
The number of by‑products should depend on the produced quantity of the main product.
For example:
| Main product quantity | By‑product quantity |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 3 |
| 8 | 3 |
| 9 | 3 |
| 10 | 3 |
This logic is implemented using a CTO Configuration Structure Rule, where:
- A configuration formula is used to set the Quantity per Assembly
- Test formula gives the expected (positive) result
When I release the Customer Order (Supply Type = Shop Order), I get the following error message:
“Calculation of quantity required for produced part <by‑product> has resulted in a negative value”
What is confusing is:
- The formula result is positive
- The same approach works for normal components
- The issue only occurs when the component is a by‑product
- Is it supported in IFS Cloud CTO to use a Configuration Structure Rule to dynamically calculate the quantity of a by‑product?
- If so, how should this be modeled to avoid negative quantity validation errors in the shop order?
- Or is the recommended/best‑practice approach to keep by‑products static and handle variable output in another way?
Any guidance, design patterns, or official constraints around CTO + by‑products would be greatly appreciated.
Kind regards,
Willem
