Returns an error when a requested resource is not found or when an index is out-of-range.
This function does not generate a change.
lookup_err([message])
| Argument | Type | Description |
|---|---|---|
| message | str (optional) | Alternative error message. |
An error value (in a client response, an error value will be packed as a string value with the error message).
This code shows lookup_err():
lookup_err();
Return value in JSON format
"requested resource not found"