Document Intelligence analyze batch documents - InternalServerError

Hello. I'am trying to use Azure DocumentIntelligence Batch analysis to anazyle documents that stored in container.

I use js code from [https://github.com/Azure/azure-sdk-for-js/tree/main/sdk/documentintelligence/ai-document-intelligence-rest]

When i run it with "prebuilt-layout" model - everything ok and document will be analyzed (I'am trying it on one document).
BUT when i run it with my custom model id (extraction model) - i got an error Error: {code: 'InternalServerError', message: 'An unexpected error occurred.'}.
If I get a list of models, my model will be on the list.

What i'am doing wrong?
Do the custom models supports batch analysis?

Thank You.