Check object has not been maintained (Press Enter to reset)

What causes this issue?

Check objects require values that you can check when you start the
transaction. If no values are specified, you cannot save the
transaction with a check object.

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 check object (using the <LS>Maintain check obj.</>
function).

Error message extract from SAP system. Copyright SAP SE.