What is the format of the error file? The error file will contain the VIN, policy number and error code. December 16, 2016 20:37 Related articles How often will insurance companies get an error file? I have auto insurance but I received a letter stating insurance for my VIN could not be confirmed. What do I do? Will there be an error code provided with the error file? How do I provide proof of insurance? Will the error file be policy-specific or will it be by VIN?