No revaluation for purchasing document item (&1/&2) with estimated price

What causes this issue?

Since the purchasing document item contains an estimated price, you
cannot carry out revaluation for it.

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?

Maintain the purchase price in purchasing document item &V1&/&V2& or
delete the estimated price indicator.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.