Kernrechtsfrage
Whether the complaint was admissible against the concession tender/publication as an appealable administrative decision.
Extrahierter Entscheid
The tender was not shown to be an appealable decision; at most it would be a preliminary act in the concession process and thus not separately challengeable.
Extrahierte Begründung
The filing lacked the official tender text and annexes; the tender did not itself create, modify, or extinguish rights or duties; and if treated as a preliminary decision, it would still not be appealable because the underlying concession award itself was not clearly subject to administrative appeal.