Is it mandatory for the merchant to complete their KYC for onboarding?

Yes, it is mandatory for the merchant to complete KYC to be onboarded on PhonePe Business. 

Before we onboard a merchant, we need to verify their personal information under the Know Your Customer (KYC) norms, rules, and laws issued by the RBI. This enables us to provide the merchant with a better experience.
 

Related question(s)
What are the documents required to complete the merchant’s KYC?