An operation name is longer than the maximum configured length.
Consequences
Sometimes long operation names are unavoidable but often they are a symptom of fuzzy thinking. They can make it more difficult to write code although this is less of an issue with modern code editors with features such as intellisense.
Strategies
Sometimes long operation names indicate where functionality should be split into multiple operations. For example, PrintUsingPageSize may be better implemented as two operations SetPageSize and Print.