Please enter both valuation class and description

What causes this issue?

If you start filling out a line, then it's necessary to enter both
valuation class and description.

System Response

The wizard won't let you continue with an incomplete line.

How to fix this error?

Fill out both valuation class and description.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.