A more thorough explanation:

nullum est erratum

Nullum est erratum is a Latin phrase that means "there is no error in the record." It is a common plea used in response to an assignment of error. This plea essentially admits well-pleaded facts.

• During a court case, the defense lawyer argued that there was no error in the record and therefore the case should be dismissed.
• In a legal brief, the plaintiff's attorney used the plea of nullum est erratum to counter the defendant's claim of error.

These examples illustrate how nullum est erratum is used in a legal context to challenge claims of error and admit well-pleaded facts.