---
title: "Define co-product/by-product processes"
slug: "bc-define-co-product-by-product-processes"
tags: ["BC", "Business Central", "Food", "Introduction"]
updated: 2026-06-15T07:28:37Z
published: 2026-06-25T09:59:17Z
canonical: "docs.staedean.com/bc-define-co-product-by-product-processes"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.staedean.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Define co-product/by-product processes

Set up production processes that result in several output items as co-product/by-product processes. Each production process is set up as a co-product process card that holds master data defining the raw materials, production equipment, and other values that apply to the process. Output items are also defined on the co-product process version card, where you designate them as either co-products or by-products.

As with other types of production BOMs, co-product/by-product processes deal exclusively with material requirements and other production characteristics. Typically a production BOM must be linked to the item record that represents the output of the production process. When working with co-product/by-product processes, however, a by-product can be produced from more than one process. Depending on how output items are defined for a particular co-product/by-product process, it may not be necessary to associate the production BOM to the related item records.

The following table describes a sequence of activities, with links to the topics that describe them. These activities are listed in the order in which they are generally performed.

| To | See |
| --- | --- |
| Distinguish co-products and by-products, and learn how the program allocates production costs among several output items. | [Co-products and by-products](/business-central/docs/bc-co-product-by-product) |
| Define the processing activity for a raw material that results in several intermediate items. | [Create co-product/by-product processes](/business-central/docs/bc-create-new-co-product-by-product-processes) |
| Reflect a slightly different process that still produces the same intermediate items. | [Create versions of co-product/by-product processes](/business-central/docs/bc-create-new-versions-of-co-product-by-product-processes) |
| Link a co-product/by-product process to pre-existing inventory items. | [Tie a co-product/by-product process to inventory](/business-central/docs/bc-tie-a-co-product-by-product-process-to-inventory) |

## Related

- [Create versions of co-product/by-product processes](/bc-create-new-versions-of-co-product-by-product-processes.md)
- [Co-products and by-products](/bc-co-product-by-product.md)
- [Create co-product/by-product processes](/bc-create-new-co-product-by-product-processes.md)
- [Tie a co-product/by-product process to inventory](/bc-tie-a-co-product-by-product-process-to-inventory.md)