You have an Azure subscription that contains an Azure AI Document intelligence resource named D1.

Step 1: The Authorization HeaderWhen calling Azure AI Document Intelligence REST API, the correct header to authenticate is:

-H "Ocp-Apim-Subscription-Key: {yourKey}"

Key1 and Secret are not valid header names.

Subscription-Key is also not the standard header.

Correct choice: Ocp-Apim-Subscription-Key

Since the file contains tabular data (tables, structured document), the right prebuilt model is:

prebuilt-document → extracts text, tables, structure, key-value pairs.

prebuilt-contract → specialized for contracts.

prebuilt-layout → extracts layout, lines, and words but not tables in structured form.

prebuilt-read → simple OCR only.

Step 2: Selecting the Prebuilt ModelSo the correct choice is: prebuilt-document

Final Completed Commandcurl -i -X POST "{endpoint}/formrecognizer/documentModels/prebuilt-document:analyze?api-version=2023-07-31" \

-H "Content-Type: application/json" \

-H "Ocp-Apim-Subscription-Key: {yourKey}" \

-d "{ 'urlSource': 'https:// /test.pdf' }"

Verified Answer:

Left box: Ocp-Apim-Subscription-Key

Right box: prebuilt-document

Microsoft References:

Azure AI Document Intelligence REST API

Prebuilt Document model