Create Media asynchronously

Requires the media create permission. Creates Media asynchronously from staged uploads or external public image URLs. client_reference_id must be unique within this request, contain 1-128 letters, digits, underscores, or hyphens, and is correlation data rather than an idempotency key. A valid batch returns HTTP 200 for full success, partial success, or when every item has an item-level error.<br> 需要圖像建立權限。系統會從暫存上傳或外部公開圖片網址非同步建立圖像。client_reference_id 在同一請求中必須唯一，長度為 1-128 個字元，且只能包含英文字母、數字、底線或連字號；此欄位 僅供關聯結果，並非冪等鍵。有效的批次請求無論全部成功、部分成功，或所有項目皆發生項目層級錯誤， 均回傳 HTTP 200。