Repeated annotation which is not marked as '@Repeatable'

Reports the repeated use of a non-@Repeatable annotation on property accessors.

As a result of using non-@Repeatable annotation multiple times, both annotation usages will appear in the bytecode leading to an ambiguity in reflection calls.

Since Kotlin 1.4 it's mandatory to either mark annotation as @Repeatable or not repeat the annotation, otherwise it will lead to compilation error.

Example:

This inspection only reports if the Kotlin language level of the project or module is 1.4 or higher.