Status of condition record will be reset (see long text)

What causes this issue?

The status of the condition record (currently "inactive", i.e.
settled), will be reset when you respond to the following confirmation
prompt.
This manual function is a substitute for the cancellation function.
This is provided for condition records that have been marked as
"deactivated" (settled) by the settlement program without a settlement
document having been created (for example, no business volume, no
rebate income).
Please note:

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

The condition record will be marked as "active" (that is, depending on
the validity period, it can be taken into account again within the
framework of price determination).
The business volume data may not have been updated correctly, in which
case it may be necessary to recompile the data.

System Response

How to fix this error?

Make sure you really do wish to reset the status.

Error message extract from SAP system. Copyright SAP SE.