# Signal library errors (0x1A00, 0x1E00)

The following table lists the signal library errors (0x1A00, 0x1E00):

Error name | Hex | Description | Category
--- | --- | --- | ---
SIGLIB_ERROR_NOT_INITIALIZED | 0x1A01 | Signal library has not been initialized. | 3
SIGNAL_LIBRARY_INVALID_PARAMETER | 0x1E01 | Invalid siglib function call. | 3
SIGNAL_LIBRARY_SLOT_ALREADY_UNMAPPED | 0x1E05 | Redundant attempt to unmap the slot. | 3
SIGNAL_LIBRARY_CONFIGURATION_ERROR | 0x1E06 | Configuration error, for example, a non-signaling core configured for signaling. | 3