| Correctness of EditorConfig key | Reports unknown property values. |  Warning |
| Correctness of EditorConfig value | Reports any unexpected values. |  Error |
| Correctness of identifier reference | Reports invalid referenced identifiers. | Error |
| Correctness of root declaration | Reports unexpected top-level declarations. | Error |
| Deprecation of EditorConfig element | Reports deprecated properties. | Warning |
| Duplicate letter in char class | Reports duplicate characters in the section's file wildcard pattern. | Warning |
| Emptiness of EditorConfig section | Reports sections which don't have any properties. | Warning |
| Empty header | Reports sections which have an empty file wildcard pattern. | Error |
| List unexpected | Reports lists of values that can't be used in current context. | Error |
| Meaningfulness of EditorConfig option | Reports properties which don't affect the resulting code style. | Warning |
| Missing required declaration | Reports declarations that miss required parts. | Error |
| No matching files | Reports sections which don't match any files in the project. | Warning |
| Option redundancy | Reports options that override other options but have the same properties and values. | Warning |
| Pair unexpected | Reports pairs of values that can't be used in current context. | Error |
| Partial override | Reports header with glob that has suspicious intersection with one of related globs. Example: [{foo, bar}] and [{foo, bas}] have non-empty intersection and none of them is subcase of the other. This is likely to be a typo. |  Weak warning |
| Redundancy of pattern enumeration | Reports redundancy in patterns. | Warning |
| Redundant char class | Reports the file wildcard patterns with charclasses which have less than two symbols. | Warning |
| Redundant pattern enumeration | Reports pattern enumerations that contain only one possible pattern. | Error |
| Space in header | Reports any suspicious spaces in the section's file wildcard pattern. Even though spaces can be used in the wildcard patterns, they are likely to be a typo. | Weak warning |
| Too many wildcards | Reports sections that contain too many wildcards. They might lead to performance issues. | Weak warning |
| Unexpected comma | Reports any commas that are not allowed in the current context. | Error |
| Uniqueness of EditorConfig section | Reports sections which match the same file patterns. | Warning |
| Uniqueness of occurrence of EditorConfig option | Reports properties that disable any other properties declared earlier in the file. | Warning |
| Uniqueness of top-level declaration | Checks that an EditorConfig file has only one top-level declaration. | Error |
| Uniqueness of value in list | Reports repeated values in the list of the prohibited value repetitions. | Error |
| Unused declaration | Reports unused declarations. | Warning |
| Wildcard redundancy | Reports wildcard patterns that could be safely removed. | Warning |