Why Digital Signature Certificate (DSC) required on e-tendering portals

Signature is a person's name written in a distinctive way as a form of identification in authorizing a cheque or document or concluding a letter for identification. Signature is used for signing the Physical Documents. 

How to sign electronic documents

Electronic documents like e-forms, PDFs etc. are required to be signed digitally using a Digital Signature CertificateDigital Signature Certificate is being used by Railway Users, Vendor Users and Bidders in IREPS for authentication during login process, Publishing of tenders, Signing and Submission of Techno-commercial and Financial Bids, Signing of Documents etc.