UPI error U10: Illegal operation
Raised by: NPCI UPI switch. Source: NPCI, UPI Error and Response Codes v2.9, section 4.4, errors from the UPI service layer.
What it means
NPCI's switch treated the requested operation as illegal (not allowed) for this transaction.
No. This decline happens before your account is debited.
Nothing to refund in the normal case. If a debit does show on your statement, the bank must reverse it by T+1 for a transfer to a person, or T+5 for a payment to a merchant.
NPCI's UPI switch.
Business: the systems worked and declined the payment.
What you should do
Use a standard payment flow in your UPI app. If it persists, contact the app's support.
If you are a merchant, bank or PSP
Check that the API and transaction type are allowed for your PSP and flow.
UPI error U10 kya hai?
U10 ka matlab hai ye operation allowed nahi hai.
Related codes
If it still isn't sorted
- Raise a complaint inside your UPI app. Every UPI app has a help or dispute option on the transaction, and it goes into NPCI's online dispute system. Keep the UPI transaction ID or RRN handy.
- If the app doesn't resolve it, contact your bank's grievance desk with the same reference.
- If your bank hasn't replied within 30 days, or you're not happy with the reply, complain to the RBI Ombudsman at cms.rbi.org.in. It's free.
Technical or business decline?
NPCI splits declines into two kinds. A technical decline means a system didn't respond or failed: a bank offline, a timeout, a switch error. A business decline means the systems worked and said no, for a reason about the account or the payment: wrong PIN, not enough money, a limit, a risk check. Retrying helps with some technical declines and almost never with business ones.