Confirm still-unconfirmed product warehouse tasks for HU &1

What causes this issue?

In handling unit &V1&, stocks are packed with reference to warehouse
requests. For handling unit &V1& there are still unconfirmed product
warehouse tasks.
In order that the document flows for the affected warehouse requests can
be updated correctly, the product warehouse tasks for handling unit &V1&
must be confirmed before the warehouse task for handling unit &V1& is
created or confirmed.

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.