# 64020: Pay: Invalid Parameter Value

Log Type: APPLICATION

Log Level: ERROR

## Description

A 64020 Error is an indication that one or more of the values provided for an attribute or parameter are invalid.

### Possible causes

* Misspelled parameter values
* Incorrect format for parameter values
* Unexpcted value for one or more parameters

### Possible solutions

* Ensure that values match what is expected by refering to the API and TwiML docs