Question juridique clé
Whether the complaint against the payment order defects was admissible or time-barred, including any nullity ex officio.
Solution extraite
The supervisory authority could only declare the grievances inadmissible, because no ex officio nullity was present and the complaint was filed too late.
Motifs extraits
Outside the complaint time limit, the authority may only examine nullity of its own motion; here the defects were not nullities.