Juvenile Justice Act Article 57
A disposition made in accordance with Article 29, Paragraph 1, a disposition made in accordance with Article 42, Paragraph 1, Subparagraph 1, and a disposition of detention for observation made in accordance with Article 55, Paragraph 3 or Article 55-3 shall be executed within 2 years from its pronouncement; the execution shall be exempted if such period lapses.Where a disposition made in accordance with Article 42, Paragraph 1, Subparagraphs 2, 3, 4 and Paragraph 2 is not executed within 3 years from the day it shall be executed, such a disposition may not be executed unless a juvenile court delivers a ruling of execution.