메시지 API 호출 후 403 return 관련

안녕하세요
현재 테스트 단계로 카카오 메시지 API (REST버전)를 사용하고 있습니다.

호출시 성공으로 아래의 형태로 응답이 왔는데
{“successful_receiver_uuids”:[“uuid”]}

403 Return이 와서 문의를 드립니다.

[2021-03-27 09:30:38:151350257][http-nio-6060-exec-5] INFO k.c.u.g.service.AbstractHttpService - url ::: https://kapi.kakao.com/v1/api/talk/friends/message/default/send
[2021-03-27 09:30:38:151350257][http-nio-6060-exec-5] INFO k.c.u.g.service.AbstractHttpService - body ::: template_object=%7B%22buttons%22%3A%5B%7B%22link%22%3A%7B%22web_url%22%3A%22http%3A%2F%2Ftm.usunshop.co.kr%2F4YIz6RK9%22%2C%22mobile_web_url%22%3A%22http%3A%2F%2Ftm.usunshop.co.kr%2F4YIz6RK9%22%7D%2C%22title%22%3A%22%EB%B0%9B%EC%9D%80+%EC%84%A0%EB%AC%BC+%ED%99%95%EC%9D%B8%ED%95%98%EA%B8%B0%22%7D%2C%7B%22link%22%3A%7B%22ios_execution_params%22%3A%22usun%3A%2F%2F%22%2C%22android_execution_params%22%3A%22usun%3A%2F%2F%22%7D%2C%22title%22%3A%22%EC%9A%B0%EC%84%A0%EC%83%81%EC%A0%90+%EA%B0%80%EA%B8%B0%28%EC%95%B1+%EB%8B%A4%EC%9A%B4%EB%A1%9C%EB%93%9C%29%22%7D%5D%2C%22object_type%22%3A%22feed%22%2C%22content%22%3A%7B%22image_height%22%3A640%2C%22image_url%22%3A%22http%3A%2F%2Ftm.usunshop.co.kr%2Fresource%2Fgoods%2F100_20210305132243_IMGLIST_0.jpg%22%2C%22link%22%3A%7B%22ios_execution_params%22%3A%22usun%3A%2F%2F%22%2C%22web_url%22%3A%22http%3A%2F%2Ftm.usunshop.co.kr%2F4YIz6RK9%22%2C%22android_execution_params%22%3A%22usun%3A%2F%2F%22%2C%22mobile_web_url%22%3A%22http%3A%2F%2Ftm.usunshop.co.kr%2F4YIz6RK9%22%7D%2C%22description%22%3A%22%EA%B6%8C%EB%8C%80%EC%9B%90%EB%8B%98%EC%9D%B4%2801089449555%29%EC%9D%B4+%EC%84%A0%EB%AC%BC%EC%9D%84+%EB%B3%B4%EB%83%88%EC%8A%B5%EB%8B%88%EB%8B%A4.+%EB%B0%B0%EC%86%A1%EC%A7%80+%EC%A0%95%EB%B3%B4%EB%A5%BC+%EC%9E%85%EB%A0%A5%ED%95%98%EB%A9%B4+%EC%84%A0%EB%AC%BC+%EB%B0%B0%EC%86%A1%EC%9D%B4+%EC%8B%9C%EC%9E%91%EB%90%A9%EB%8B%88%EB%8B%A4.%22%2C%22image_width%22%3A640%2C%22title%22%3A%22%5B%EC%9A%B0%EC%84%A0%EC%83%81%EC%A0%90%5D+%EC%84%A0%EB%AC%BC%EC%9D%B4+%EB%8F%84%EC%B0%A9%ED%96%88%EC%8A%B5%EB%8B%88%EB%8B%A4.%22%7D%7D&receiver_uuids=%5B%22yv7G88T8zvfb6N_m0urT4tH9yfHJ8Mbxhg%22%5D

[2021-03-27 09:30:38:151350317][http-nio-6060-exec-5] ERROR k.c.u.g.service.AbstractHttpService - Server returned HTTP response code: 403 for URL: https://kapi.kakao.com/v1/api/talk/friends/message/default/send

감사합니다.

안녕하세요~

가장 최근 에러로그를 보니 content 하위에 필수로 설정되야할 image_url이 없다고 나오네요.
메시지 내용 확인해보시겠어요?

Missing required creator property 'image_url'

확인 감사드립니다 ㅠㅠ
상품이미지에 대한 url이었는데, image_url 셋팅이 안되어 있는 케이스가 있었습니다.