*M/s Faime Makers Pvt Ltd V. District Deputy Registrar, Co-op societies (2025 SC)* The principle of Res Judicata applies to and binds *quasi-judicial authorities*. Whenever a judicial or quasi-judicial tribunal gives a finding on law or fact, its findings cannot be impeached collaterally or in a second round and are binding until reversed in appeal or revision or by way of writ proceedings. The characteristic attribute of a judicial act or decision is that *it binds*, _whether right or wrong_. Thus, any error, either of fact or law, committed by such bodies cannot be controverted otherwise by way of an appeal or revision or a writ unless the erroneous determination relates to the jurisdictional matter of that body.