No selection ID for routings can be determined

What causes this issue?

You have specified a task list group or a group counter. The system
then tried to determine the selection ID for routings, but could not do
so. This selection ID is required to determine the necessary
alternative routings.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Ask your system administrator to specify the selection ID in
Customizing for <LS>Product Cost Controlling</>.

Procedure for System Administrators

You do this in the activity <LS>Define Quantity Structure
Determination</>. Maintain an entry with a quantity structure
determination ID of four blanks (' ').
<DS:SIMG.SIMG_CFMENUORKKOKK5>Proceed</>

Error message extract from SAP system. Copyright SAP SE.