> ## Documentation Index
> Fetch the complete documentation index at: https://docs.linkupapi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Error Messages

> Complete guide of error messages and status codes

| Status Code | Error Message                                                    |
| ----------- | ---------------------------------------------------------------- |
| 400         | Bad parameter                                                    |
| 400         | Invalid LinkedIn URL format                                      |
| 400         | Invalid post\_url parameter                                      |
| 400         | Invalid LinkedIn company URL format                              |
| 400         | Required fields are missing                                      |
| 400         | total\_results must be greater than 0                            |
| 400         | Error while sending connection request                           |
| 400         | Error while sending message                                      |
| 400         | Error while creating post                                        |
| 400         | Error while posting comment                                      |
| 401         | Invalid API key or insufficient credits                          |
| 401         | Unauthorized                                                     |
| 401         | Bad username or password                                         |
| 401         | Session expired                                                  |
| 401         | Verification failed                                              |
| 403         | LinkedIn token expired                                           |
| 404         | Not found - Bad URL                                              |
| 404         | Error while getting contact info, check the linkedin profile url |
| 429         | LinkedIn Rate limit exceeded. Please try again later             |
| 429         | API Rate limit exceeded. Please try again later                  |
| 500         | Server error                                                     |
| 500         | An error occurred while processing your request                  |
| 500         | LinkedIn API error occurred                                      |