> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/kalipso5/developing/error-codes/rfid-and-barcode-readers-specific.md).

# RFID and Barcode Readers Specific

| Code | Error                                       | Description                            |
| ---- | ------------------------------------------- | -------------------------------------- |
| -901 | K\_ERROR\_READER\_INVALID\_TAG\_TYPE        | Invalid TAG Type                       |
| -902 | K\_ERROR\_READER\_TAG\_TYPE\_NOT\_SUPPORTED | TAG Type not supported                 |
| -903 | K\_ERROR\_READER\_READ                      | Error reading                          |
| -904 | K\_ERROR\_READER\_WRITE                     | Error writing                          |
| -905 | K\_ERROR\_READER\_CONFIGURE                 | Error setting configurations           |
| -906 | K\_ERROR\_READER\_INVALID\_CONFIGURATION    | Invalid configuration specified        |
| -907 | K\_ERROR\_READER\_INVALID\_ANSWER           | Invalid answer received                |
| -908 | K\_ERROR\_READER\_INITIALIZING\_API         | Error initializing API or loading DLLs |
| -909 | K\_ERROR\_READER\_API\_NOT\_INITIALIZED     | Error API not initialized              |
| -910 | K\_ERROR\_READER\_CONNECT                   | Error connecting to reader             |
| -911 | K\_ERROR\_READER\_DISCONNECT                | Error disconnecting to reader          |
| -912 | K\_ERROR\_READER\_NOT\_CONNECTED            | Error not connected to reader          |
| -913 | K\_ERROR\_READER\_SENDING\_COMMAND          | Error sending command to reader        |
| -914 | K\_ERROR\_READER\_RECEIVING\_ANSWER         | Error receiving answer from reader     |
| -915 | K\_ERROR\_READER\_EXECUTING\_COMMAND        | Error executing command on reader      |
| -916 | K\_ERROR\_READER\_TIMEOUT                   | Timeout reading                        |
| -917 | K\_ERROR\_READER\_FUNCTION\_NOT\_SUPPORTED  | Function not supported                 |
| -918 | K\_ERROR\_READER\_NOT\_CONFIGURED           | Reader is not configured               |