The application (note: Application) cascade (note: Type cascade) (the application of the source (note: Source), the set.application of a typing rule (note: Rule), the frontmatter (note: Frontmatter) application) produced an identifier (note: Identifier) that applications: does not declare. The value (35 passages, no note) is kept as written on the entity (note: Entity) and the finding (note: Finding) says where it came from; nothing composes the entity into a declared application. Distinct from the missing application, where the cascade produced nothing at all.
Check (note: Check) W-APP-UNKNOWN, severity (note: Severity) warning by default, documented with a before and after example in the check pages. The severity can be overridden per project (note: Project) or per repository (note: Knowledge repository).