How many digits are in a UPI ID?

A UPI ID, also known as a Virtual Payment Address, does not have a fixed number of digits but rather follows a specific alphanumeric format. It typically consists of a unique username followed by an @ symbol and a bank or provider handle, such as name@bank. According to NPCI guidelines, the total length of a UPI ID cannot exceed 45 characters. While the ID itself is flexible in length, it is important to distinguish it from the UPI transaction ID, which is standardized at 35 alphanumeric characters.