This rule belongs to the
json-validation ruleset and states that:
A property of JSON is identified uniquely with a key, which must use valid characters only.
|Message||JSON data is invalid as a property key/identifier uses an invalid character.|
|Broad Category||JSON Property Key|
- If key name is unquoted, it must not contain any special characters that can require escaping e.g. '-', '/', '\', '_', '.', ',' etc.
- If key name is quoted, did you perhaps miss the starting quote?