Declaration Under Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) (GC-120) Tell the court where any children in the case lived for the last five years and who lived with them. Get form GC-120 espaƱolGet form GC-120 in Spanish (Spanish) Effective: January 1, 2009 View GC-120 Declaration Under Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) form Go to How-to instructions for Guardianship Go to Guardianship Form Packets