Artikel 29

1. In the case of a dispute the subject of which, according to the municipal law of one of the parties, falls within the competence of its judicial or administrative authorities, the party in question may object to the dispute being submitted for settlement by any of the procedures laid down in this Convention until a decision with final effect has been pronounced, within a reasonable time, by the competent authority.
2. If a decision with final effect has been pronounced in the State concerned, it will no longer be possible to resort to any of the procedures laid down in this Convention after the expiration of a period of five years from the date of the aforementioned decision.