request URL：https://api.appstoreconnect.apple.com/v1/appScreenshots request body: { "data": { "type": "appScreenshots", "attributes": { "fileSize": 11097, "fileName": "my_screenshot.png" }, "relationships": { "appScreenshotSet": { "data": { "type": "appScreenshotSets", "id": "54594240-5c4c-4a0f-add1-b4cb7e52d166" } } } } } response: { "errors": [ { "id": "9523fce2-5ca3-407e-8829-fd57f2011caa", "status": "409", "code": "ENTITY_ERROR.RELATIONSHIP.INVALID", "title": "The provided entity includes a relationship with an invalid value", "detail": "appScreenshotSets doesn't exist!!", "source": { "pointer": "/data/relationships/appScreenshotSet" } } ] }