flutter upi transaction not working (error)

UPI not working in a flutter, I tried much time into my app with differents UPI app and different library from pub.dev

upi_india (not working) upi_pay (not working) flutter_upi (not working)

Errors :

1. Too many attempts more than 10 time
2. Risk threshold exceed
3. Payment failure (code : U16)
4. you've exceeded maximum transaction amount set by your bank

GPay, BHIM, PhonePe, PayTm all transactions failed in this apps using with flutter 3rd party upi libraries

Some of the libraries are discontinued from pub.dev

from flutter upi transaction not working (error)