This post has been republished with updates since its original publish date in March 2012
You've tried to decode a VIN, or a handful of VINs, but for whatever reason you keep getting an invalid VIN message. This can be extremely frustrating, especially if you have no idea what might be causing the failed decode(s). There are quite a few reasons why a VIN won't decode.
If you're having trouble decoding vehicles in your inventory, consider this list of errors and challenges commonly faced when working with Vehicle Identification Numbers.
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