club_id is still None mid-validation for a brand-new level -- creation assigns the club in form_valid(), after is_valid() already ran clean(). validate_club_scope only makes sense once club_id is actually set; skip it on create, where the form's own already-club-scoped inherits_from queryset is what prevents a cross-club pick anyway. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01ECGMEwrc2k4D8VQuwjstj9