What is MSME Udyam Re-Registration? MSME Re-Registration is suitable for those who already before registerd under old Udyog Aadhaar Registration and now as it is done compulsory by the government to update to MSME Udyam Registration. For this reason MSME Re-registration is required for an MSMEs. Why MSME Udyam Re-Registration is important? MSME re-registration is important for maintaining government benefits, regulatory compliance, and business continuity.