Future cost estimate not found (inconsistent data)

What causes this issue?

The master record for this material points to a cost estimate that does
not exist. This can happen for example when you
<DS:GLOS.marking>mark</> a cost estimate and then cost the material
again.

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?

You can attempt to mark the cost estimate for this material again.
Otherwise notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.