You have an Azure subscription that has the following configurations:• Subscription ID: 8d3591aa-96b8-4737-ad09-OOf9b1ed35ad• Tenant ID:...

Comprehensive Detailed ExplanationYou’re creating a resource that will handle sentiment analysis (Language) and OCR (Vision) with a single key and endpoint. That is a Cognitive Services multi-service (Azure AI services) account.

When creating any Azure resource via ARM (HTTP/REST), the URL must be scoped to a subscription, not a tenant, and use the correct resource provider.

Scope segment: Usehttps://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{rg} /providers/...Therefore, choose subscriptions/8d3591aa-96b8-4737-ad09-00f9b1ed35ad (not the tenant scope).

Resource provider: Multi-service cognitive account is under Microsoft.CognitiveServices.The full path to create would be like:/providers/Microsoft.CognitiveServices/accounts/{accountName}?api-version=2021-10-01

This creates a single Cognitive Services (Azure AI services) resource that provides one endpoint and one key across multiple services (e.g., Language for sentiment analysis and Vision for OCR).

Azure Resource Manager: Create Cognitive Services account (Microsoft.CognitiveServices/accounts) using REST and API version 2021-10-01.

Azure AI services (Cognitive Services) multi-service resource overview—single key/endpoint across services.

Microsoft Azure AI Solution References