# 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               |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://doc.sysdevmobile.com/kalipso5/developing/error-codes/rfid-and-barcode-readers-specific.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
