UPI error codes / B1
UPI error B1: Registered mobile number linked to the account has been changed/removed
Official NPCI descriptionREGISTERED MOBILE NUMBER LINKED TO THE ACCOUNT HAS BEEN CHANGED/REMOVED BUSINESS
Raised by: Bank / PSP. Source: NPCI, UPI Error and Response Codes v2.9.
What it means
The mobile number your UPI is registered with is no longer the one linked to your bank account.
Was money deducted?
No.
Type of decline
Business: the systems worked and declined the payment.
What you should do
Update your mobile number with the bank first, then register UPI again with that number. UPI is tied to the SIM in your phone.
If you run a payments business
Nothing to retry.
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.