The Legal Metrology (Packaged Commodities) Registration, commonly known as LMPC Registration, is one of the most important compliance requirements under the Legal Metrology Act, 2009 in India. The Act regulates trade and commerce involving weights, measures, and packaged goods to ensure accuracy, transparency, and consumer protection. When it comes to pre-packaged commodities—goods that are packed without the purchaser being present—the law makes it mandatory for specific stakeholders to obtain LMPC registration. These include importers, manufacturers, and packers. Each of these entities has unique roles in the supply chain, but all share the responsibility of complying with LMPC requirements. In this article, we will explain in detail who needs LMPC registration, why it is necessary, and the consequences of non-compliance.