No. You cannot send money without setting a UPI PIN for a particular bank account.
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What is a UPI ID?
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Who can use UPI on Freecharge?
What is Freecharge UPI?
What can be a UPI ID?
Does the UPI ID necessarily have to end with @freecharge?
What can you do using Freecharge UPI?
Are there any charges to use UPI on Freecharge?
What if someone has already created a UPI ID using my name?
Is UPI available on Freecharge app on iOS, Windows and Blackberry smartphones?
Can I send money without setting a UPI PIN?
No. You cannot send money without setting a UPI PIN for a particular bank account.