Enter the article hierarchy completely or not at all

What causes this issue?

You did not specify the article hierarchy (the hierarchy and hierarchy
node) completely.

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?

Enter the hierarchy and the hierarchy node completely or do not enter
anything.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.