PRINCIPLE STATEMENT

It is not every mistake or error in a judgment that will result in the appeal being allowed. It is only when the error is substantial in that it has occasioned a miscarriage of justice that an appellant court is bound to interfere.

RATIO DECIDENDI (SOURCE)

Per Iguh, JSC, in Ojengbede v. Esan & Anor (2001) NLC-321991(SC) at p. 21; Paras A–C.
"It is not every mistake or error in a judgment that will result in the appeal being allowed. It is only when the error is substantial in that it has occasioned a miscarriage of justice that an appellant court is bound to interfere."
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EXPLANATION / SCOPE

Only substantial errors that occasion a miscarriage of justice warrant appellate interference. Minor, technical, or harmless errors do not justify reversal. The appellant must demonstrate that the error materially affected the outcome or denied fair hearing. The appellate court assesses whether the result would have been different without the error. If not, the appeal fails despite error. The principle prevents appeals from succeeding on technicalities where substantial justice was done. The burden is on the appellant to show prejudice. The court distinguishes between mere irregularities and fundamental errors. Harmless error doctrine applies. The principle applies to both civil and criminal appeals. The court will not reverse for immaterial mistakes.

CASES APPLYING THIS PRINCIPLE