KYC means Know Your Customer and sometimes Know Your Client. KYC or KYC check is the mandatory process of identifying and verifying the client's identity when opening an account and periodically over time.
KYC is done in order to eliminate any risks involved and to successfully complete a transaction.
It plays a huge role while making a transaction be it Cryptocurrency or Fiat Currency.
If the KYC is not uploaded, we will be unable to complete the transaction as your account won't be fully verified.