Merge pull request #127605 from alexeyo26/alexeyo/speech-batch-non-policy-sas

Speech Service Batch transcription: content explaining that policy-based SAS are not supported.

Author: PRMerger17

articles/cognitive-services/Speech-Service/batch-transcription.md

@@ -8,7 +8,7 @@ manager: nitinme
 ms.service: cognitive-services
 ms.subservice: speech-service
 ms.topic: conceptual
-ms.date: 08/20/2020
+ms.date: 08/28/2020
 ms.author: wolfma
 ms.custom: devx-track-csharp
 ---
@@ -167,7 +167,7 @@ Use these optional properties to configure transcription:
       `destinationContainerUrl`
    :::column-end:::
    :::column span="2":::
-      Optional URL with [service SAS](../../storage/common/storage-sas-overview.md) to a writeable container in Azure. The result is stored in this container. When not specified, Microsoft stores the results in a storage container managed by Microsoft. When the transcription is deleted by calling [Delete transcription](https://westus.dev.cognitive.microsoft.com/docs/services/speech-to-text-api-v3-0/operations/DeleteTranscription), the result data will also be deleted.
+      Optional URL with [Service ad hoc SAS](../../storage/common/storage-sas-overview.md) to a writeable container in Azure. The result is stored in this container. SAS with stored access policy are **not** supported. When not specified, Microsoft stores the results in a storage container managed by Microsoft. When the transcription is deleted by calling [Delete transcription](https://westus.dev.cognitive.microsoft.com/docs/services/speech-to-text-api-v3-0/operations/DeleteTranscription), the result data will also be deleted.
 :::row-end:::
 
 ### Storage