You have not selected any stock mgt level to be adopted

What causes this issue?

You have chosen the function "Copy" without having selected the stock
management levels to be adopted (copied).

System Response

The system has not adopted any stock management levels.

How to fix this error?

To allocate stock management levels to this inventory sampling again
choose "Transaction -> Stock mgmt levels -> Selectable," then select
the desired stock management levels, and choose "Edit -> Copy."

Error message extract from SAP system. Copyright SAP SE.