"Child assets are not rendering properly" API Error

[Derrick Fulkerson]

I keep getting this error and I am not sure why.

My POST body looks something like this:

{
"advertiserId":"XXXXXXXX",
"name": "Creative Test 1 - Static",
"type": "DISPLAY",
"size": {
"width": 160,
"height": 600
 },
"CreativeAssets": [
  {
"assetIdentifier": {
"type": "HTML_IMAGE",
"name": "160x600.jpg"
},
"id": "XXXXXXXXX",
"richMedia": false,
"kind": "dfareporting#creativeAssetMetadata",
"mediaRequestInfo": {
"requestId": "XXXXXXXXXXXXXXXX",
"notificationType": "END",
"currentBytes": "43",
"totalBytes": "43",
"totalBytesIsEstimated": false,
"customData": "",
"diffObjectVersion": "",
"finalStatus": 0,
"requestReceivedParamsServingInfo": ""
}
}
 ]
}

The CreativeAssets body is coming directly from the creativeAssets POST from my previous step. Here is the full error I am getting, I have tried changing things around, using a different image, but keep getting this same error:

"response": {
"error": {
"code": 400,
"message": "25037 : Child assets are not rendering properly.",
"errors": [
{
"message": "25037 : Child assets are not rendering properly.",
"domain": "global",
"reason": "invalid"
},
{
"message": "8219 : You must specify one primary asset of type HTML5 or Image.",
"domain": "global",
"reason": "required"
}
]
}
}

[DCM API (DoubleClick Campaign Mgr)]

Hi, 

Thanks for reaching out to the Google DCM 360 API Forum. I hope you are doing well today.

Moving forward to your concern in relation to API, such as encountering errors on your API requests, you may provide us the below information so we can investigate on our end?
 

• DCM Account ID
• Profile ID used in request call

In addition to this matter, we recommend to follow the guidelines for the required field for the endpoint “Method: creativeAssets.insert” (https://developers.google.com/doubleclick-advertisers/rest/v4/creativeAssets/insert). Let us know how it goes on your end.

You may send the requested information privately via the "Reply To Author" option.

Have a great day.

This message is in relation to case "ref:_00D1U1174p._5004Q2n60it:ref"

Thanks,
 

DCM API Team

[Derrick Fulkerson]

To anyone that comes across this later, my issue was I was entering my creativeAssets array as "CreativeAssets" instead of "creativeAssets". Once I fixed that, my problem was solved.

[DCM API (DoubleClick Campaign Mgr)]

Hello Derrick,

Thank you for sharing the information. This should be helpful to other users as well. In the event that you encounter any related issues with API, do not hesitate to come back to us and we will be glad to assist you.