| padding | An odd byte length chunks exists that is not immediately followed by a NULL byte. This could cause problems in reading subsequent chunks in some systems. |
| fmt_ | For a PCM audio file this means that the technical data expressed in the <fmt_> chunk contains contradictory information. |
| no WAV header | The file does not appear to be a WAV file. |
| small | The declared chunk size of the RIFF chunk is smaller than the file actually is. |
| no RIFF/RF64 header | The file does not initiate with a RIFF chunk. |
| truncated | The actual file size is less than is stated in the file's chunk size declarations. This could indicate that the file is the result of an interrupted duplication or transfer. |
| chunk is too big, it can not be loaded | The total size of the non-audio-data chunks exceed the amount of memory available. |
| 2 XXXX chunks | The file contains two chunks of the same chunk id (excepting padding chunks: FILR, FLLR, PAD_, JUNK, and JUNQ). |