If you’ve used the Publish a Post endpoint on LinkedIn and included mediaUrls in your post, your post, despite receiving a successful response, may no longer display if the media or post content doesn’t meet LinkedIn’s requirements. For example, the LinkedIn post may return the following successful response:
LinkedIn Post Response
{
    "status": "success",
    "errors": [],
    "postIds": [
        {
            "status": "success",
            "id": "urn:li:share:7287840497870462977", // LinkedIn Social Post ID
            "postUrl": "https://www.linkedin.com/feed/update/urn:li:share:7287840497870462977/"
            "owner": "urn:li:organization:12345670",
            "platform": "linkedin"
        }
    ],
    "id": "PmrbzuYh1hdKMc52zC8"
}
However, the post may not display in LinkedIn, using the postUrl, if the media or post content doesn’t meet LinkedIn’s requirements. linkedin post not displayed While LinkedIn may provide a postUrl initially, they will reject the post if, during post-processing, any of the media or post content doesn’t meet their requirements. Please consult the LinkedIn Media Guidelines to ensure that your media remains compliant and verify the content of your post is acceptable.