Update cognitive-search-skill-azure-openai-embedding.md

Updated with a limitation introduced with the AI Studio services and the custom subdomain of AI Services.

Author: gmndrg

articles/search/cognitive-search-skill-azure-openai-embedding.md

@@ -9,13 +9,17 @@ ms.custom:
   - ignite-2023
   - build-2024
 ms.topic: reference
-ms.date: 08/05/2024
+ms.date: 10/16/2024
 ---
 
 #	Azure OpenAI Embedding skill
 
 The **Azure OpenAI Embedding** skill connects to a deployed embedding model on your [Azure OpenAI](/azure/ai-services/openai/overview) resource to generate embeddings during indexing. Your data is processed in the [Geo](https://azure.microsoft.com/explore/global-infrastructure/data-residency/) where your model is deployed. 
 
+Your Azure OpenAI Service must have an associated [custom subdomain](/ai-services/cognitive-services-custom-subdomains). If the service was created through the Azure portal, this subdomain is automatically generated as part of your service setup. Ensure that your service includes a custom subdomain before using it with the Azure AI Search integration.
+
+Note that Azure OpenAI models created with an AI Studio service account are not supported. Only models from the Azure OpenAI Service are compatible with this integration. 
+
 The [Import and vectorize data wizard](search-get-started-portal-import-vectors.md) in the Azure portal uses the **Azure OpenAI Embedding** skill to vectorize content. You can run the wizard and review the generated skillset to see how the wizard builds the skill for embedding models. 
 
 > [!NOTE]