Udyog Aadhaar
Udyog Aadhaar is a twelve digit Unique Identification Number provided by the Indian Ministry of Micro, Small and Medium Enterprises beginning in September 2015. It is also known as Aadhaar for business. As of July 2018, more than 4.8 million (48 lakh) MSMEs in India are registered under Udyog Aadhaar. Documents Required for Udyog Aadhaar 

 Aadhaar card or Aadhaar Enrolment ID slip
 Bank passbook with photograph
 Voter ID card
 Passport
 PAN card
 Driving license
 An employee ID card issued by the Government (if any)
 Caste certificate (for SC, ST, and OBC category)

Criticisms 
Companies registered under Udyog Aadhaar are often noted for their poor productivity; both capital and labour productivity per unit of output are low compared to bigger firms. This indicates that Udyog Aadhaar has failed to augment technological adoption for MSMEs. 