# False annotation

**URL:** <https://discuss.roboflow.com/t/false-annotation/506>\
**Category:** 🤝  Community Help\
**Created:** [May 28, 2022, 2:53pm UTC](https://discuss.roboflow.com/t/false-annotation/506 "2022-05-28T14:53:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![BikiniGordon](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/bikinigordon/32/359_2.png) [@BikiniGordon](https://discuss.roboflow.com/u/BikiniGordon)\
**Post date:** [May 28, 2022, 2:53pm UTC](https://discuss.roboflow.com/t/false-annotation/506/1 "2022-05-28T14:53:12Z")

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Hi, so I am very new to making an object detection model. I’m trying to upload a Stanford cars dataset to use to train it. I uploaded an image and a coco format annotation to annotate an image, but the result is every class that should be car models turned out to be all 1 class called json.

 ![image_2022-05-28_215156236](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/1X/194ca0be0900069aa8e9132e190667fe08cb362f.png)

Am I doing anything wrong with my coco JSON file? Did I do it wrong?  
My coco json

> **[car\_stanford\_v2.json](https://drive.google.com/file/d/1CwY8tzAlihCBQO_FdEOUaiWTMsnl8idS/view?usp=sharing)**
>
> Google Drive file.

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**Author:** ![Mohamed](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/mohamed/32/62_2.png) [@Mohamed](https://discuss.roboflow.com/u/Mohamed)\
**Post date:** [June 14, 2022, 7:20pm UTC](https://discuss.roboflow.com/t/false-annotation/506/2 "2022-06-14T19:20:56Z")

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Hi @BikiniGordon I took a deeper look at the JSON file and I’m not particularly sure, as it looks correct. It could be due to the ordering of the `id`, `supercategory`, and `name` fields within `categories`.

- your file  

- our example: [COCO JSON Annotation Format](https://roboflow.com/formats/coco-json)  
 ![image](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/1X/67026c2193b6ca1498dffb408b5a1855eb3e5b72.png)

I looked at getting the dataset and annotation files from Kaggle to debug and test myself, but I wasn’t sure what changes were made to them, as the Kaggle version has the annotation files in `.mat` format rather than `COCO JSON` format.

Did you reformat the annotation files yourself? If so, can you create a Google Drive folder of the images you tried to upload too and share it with me `mohamed@roboflow.com`?

If all images you used for upload, including the file names, are the exact same as the Kaggle ones, with no changes or omissions, let me know, and I can go ahead and download them to test).