| Name | Description |
|---|---|
| success | The operation completed successfully. |
| illegal_null | Null encountered in pct-encoded. |
| illegal_reserved_char | Illegal reserved character in encoded string. |
| non_canonical | A grammar element was not in canonical form. |
| bad_pct_hexdig | Bad hexadecimal digit. |
| incomplete_encoding | The percent-encoded sequence is incomplete. |
| missing_pct_hexdig | Missing hexadecimal digit. |
| no_space | No space in output buffer |
| not_a_base | The URL is not a base URL |