请教:我为一家四口制订一群组后,为何在提供材料清单那里,对儿童的要求不同(之前已选择父母陪同小孩一起),系统强制提交“Consent for travel of a child under the age of 18, Evidence of”,建议提交“Form 1257 Undertaking Declaration (说明:If a child under the age of 18 is staying in Australia with someone other than a parent, legal guardian or relative, provide a completed and signed Form 1257 Undert...