Setting Up a Co/By-product Structure
A co-product/by-product structure defines the items that result from a base process and specifies whether they are co-products or by-products. These product structures can be set up in several ways. The easiest way is through Process/Formula Maintenance (15.18), which combines the features of the following programs:
• Master Comment Maintenance (14.12)
• Routing Maintenance (14.13.1)
• Formula Code Maintenance (15.1)
• Formula Maintenance (15.5)
• Co/By-Product Maintenance (15.12.1)
1 Set up BOM/formula codes using Process/Formula Maintenance (15.18) or Formula Code Maintenance (15.1).
Note: You can have the system create BOM/formula codes automatically when you define formulas and product structures.
BOM Code
Enter the base process item number.
Batch Size
Displays the batch quantity. The default is 0. To modify this field, use Batch Quantity Change (15.9).
UM
The BOM unit of measure. Should be the same as the item unit of measure for the base process item.
2 Set up the co/by-product structure using Process/Formula Maintenance (15.18) or Co/By-Product Maintenance (15.12.1).
Backflush Method
Enter 1 or 2. This determines the calculation method used to backflush base process components. See
here.
Quantity Complete Method
Enter one of five valid calculation methods. This method determines how the expected co-product and by-product receipt quantities used to calculate variances for joint order sets are determined. The default is from Work Order Control (16.24). See
here.
Co/By Type
Enter C for co-product or B for by-product.
Quantity
Enter the quantity per batch if Qty Type is Batch, or the quantity per base process unit if Qty Type is blank. The system calculates this field automatically when Qty Type is Percent.
Qty Type
Enter B for batch, P for percent, or leave blank to indicate per base process unit.
Process
Enter the percent per batch when Qty Type is Percent. This is calculated automatically when Qty Type is Batch.
Cost Allocation
Enter the percentage of base process cost to be allocated to this co-product. If Co/By Type is B, an allocation percentage cannot be entered.
Costs for co-products and by-products are calculated using the same programs that calculate regular costs. Once costs are rolled up for a base process (yielding gross cost), by-product costs are subtracted to arrive at the base process net cost. The entire net cost is then allocated to co-products of the base process. Allocation percentages for all co‑products of a base process should add up to 100 percent.
Structure Type
This field is display-only and always set to J (Joint).
3 Set up formulas or product structures used to define the ingredients or components required for a base process. You can use Process/ Formula Maintenance (15.18) or Formula Maintenance (15.5). To enter a product structure, use Product Structure Maintenance (13.5).
Parent Item
Enter the base process item number.
Component Item
Enter components of the base process item.
When adding a formula, you can enter a batch size. Use Batch Quantity Change (15.9) to modify a formula’s batch size.
4 Set up routings for the base process using Process/Formula Maintenance (15.18), Process Definition Maintenance (15.13), or Routing Maintenance (14.13.1).
• In Process/Formula Maintenance, enter the base process in the BOM/Formula Code field.
• In Process Definition Maintenance or Routing Maintenance, enter the base process in the Routing Code field.