> For the complete documentation index, see [llms.txt](https://trillbit.gitbook.io/trillbit-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trillbit.gitbook.io/trillbit-sdk/knowles-smartmic-support/trill-sdk-for-knowles/troubleshooting.md).

# Troubleshooting

Below is a list of the error codes received the SDK throws: 

| Error code                                 | Description                                                                                                                                                                  |
| ------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| TRILL\_HOST\_ERR\_CODE\_BASE               | This error signifies the start of trillbit error codes.                                                                                                                      |
| TRILL\_HOST\_ERR\_INVALID\_PARAMETERS      | This error signifies invalid parameters passed to the Trillbit SDK methods.                                                                                                  |
| TRILL\_HOST\_ERR\_INVALID\_SDK\_LICENSE    | This error signifies absence of a valid license for the Trillbit SDK. Please refer to the licensing guide and trillbit developer’s portal for more information on licensing. |
| TRILL\_HOST\_ERR\_LICENSE\_NOT\_FOUND      | This error signifies that a license was not found corresponding to the host platform/device id.                                                                              |
| TRILL\_HOST\_ERR\_BUFFER\_TOO\_SMALL       | This error signifies that the host is out of memory.                                                                                                                         |
| TRILL\_HOST\_ERR\_INVALID\_DATA            | This error signifies that the parameters used within a function call are invalid.                                                                                            |
| TRILL\_HOST\_ERR\_FAILED\_TO\_GET\_DEV\_ID | This error signifies a failure while fetching the host device ID.                                                                                                            |
| TRILL\_HOST\_ERR\_AUTH\_FAILED             | This error signifies that the license file is corrupt.                                                                                                                       |


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