What do you mean by Trading Partner Identification Number (TPIN) and how it Generate , if I will open my account it Citibank?

Citibank is the consumer division of financial services multinational Citigroup.

Trading Partner Identification Number (TPIN) is a confidential number assigned to organizations which are or intend to be contractors to the Federal Government of the United States. It is issued by the Central Contractor Registration (CCR) of the Department of Defense.

there will be one TPIN per account and it will be issued to you when you open new account in Citibank and this will be used
when trnasacting with bank thru telephone

Bank profile :
Type Subsidiary
Industry
Banking
Financial services
Founded 1902
Headquarters Mumbai, Maharashtra, India
Key people Pramit Jhaveri
(Citi Country Officer, India)
Kartik Kaushik
Country Business Manager, Global Consumer Group, Citi India
Products
Credit Cards
Debit Cards
Loans
Investments
Assurance/Insurance
NRI Banking
Private Banking
Owner Citigroup
Number of employees 7,500