Experiencing an error when creating cost accounting distributions for a co-product in a work order.

Summary:

We are experiencing an error when creating cost accounting distributions for a co-product in a work order. Although the co-product's cost is correctly displayed based on the cost allocation percentage in the work definition, the system shows an error stating no standard cost is defined for the co-product. We expect costs to be allocated according to the defined percentage.

We are having a primary product and a co product in work definition, and cost allocation is set as percentage (80% for Primary item and 20% for co product).

Could we get any work around on this?

Version (include the version you are using, if applicable):