LINGO DLL Error Codes
Most of the LINGO DLL functions return an error code. Below is a list of all possible codes:
| Value | Name | Descriptions | 
| 0 | LSERR_NO_ERROR_LNG | No error. | 
| 1 | LSERR_OUT_OF_MEMORY_LNG | Out of dynamic system memory. | 
| 2 | LSERR_UNABLE_TO_OPEN_LOG_FILE_LNG | Unable to open the log file. | 
| 3 | LSERR_INVALID_NULL_POINTER_LNG | A NULL pointer was passed to a routine that was expecting a non-NULL pointer. | 
| 4 | LSERR_INVALID_INPUT_LNG | An input argument contained invalid input. | 
| 5 | LSERR_INFO_NOT_AVAILABLE_LNG | A request was made for information that is not currently available. | 
| 6 | LSERR_UNABLE_TO_COMPLETE_TASK_LNG | Unable to successfully complete the specified task. | 
| 7 | LSERR_INVALID_LICENSE_KEY_LNG | The license key passed to LScreateEnvLicenceLng() was invalid. | 
| 8 | LSERR_INVALID_VARIABLE_NAME_LNG | A variable name passed to LSgetCallbackVarPrimal() was invalid. | 
| 1000 | LSERR_JNI_CALLBACK_NOT_FOUND_LNG | A valid callback function was not found in the calling Java application. |