Error when creating a custom model (type: KEY_VALUE_EXTRACTION) in OCI Document Understanding

Hello,

I am trying to train a custom Document Understanding model in Oracle Cloud Infrastructure, but the training job fails during execution due to an annotation parsing error.

The job is accepted successfully, infrastructure is provisioned, and training starts, but it eventually fails with the following error:

Create Model Failed. Training failed. Error while parsing the annotations.
Total valid annotations: 0
Expected: 5 annotations for training
Invalid entries: 10 Images, 0 Annotations

Additional Context

• I used Label Studio to label/annotate the training data.
• The annotations were exported using JSON-MIN format.
• Images and annotation files were uploaded as part of the training dataset.

From the error message, it seems that OCI is unable to parse or recognize the annotations generated by Label Studio.