List of documents required for GeM Registration:
Proprietorship:

Pan Card of Proprietor
Aadhaar Card of Proprietor
GST Certificate
MSME Certificate(if avlbl)
Partnership Firm
Firm Pan Card
Partner Pan Card (Key Person)
Aadhaar Card (Key Person)

Firm Gst Certificate:
Firm Bank Account Details
Firm MSME Certificate (if avlbl)
Company
Company Pan Card
Director Pan Card
Aadhaar Card (Key Person)

Company Gst Certificate:
Company Bank Account Details
Company MSME Certificate (if avlbl)

Trust / Society:
Trust / Society Pan Card
Partner Pan Card (Key Person)
Aadhaar Card (Key Person)
Trust / Society Gst Certificate
Trust / Society Bank Account Details
Trust / Society MSME Certificate (if avlbl)