I have 18 credit cards and all of them were issued without any documentation or verification. Whenever a bank has asked for documents or tried verification, they have rejected me! I was rejected for Amex despite providing a good ITR (self employed), for AU Zenith (they always claim verification failed) and BOB Energie. All others like SBI Cashback, SBI BPCL, Axis Flipkart and Airtel, ICICI MMT and Apay, Union Bank Rupay Select, Indusind Pinnacle, One Card, Kotak, HDFC etc were issued without any documents or verification.