Merge pull request #249540 from pauljewellmsft/pauljewell-transfer-validation

Add note about transfer validation failure scenario

Author: v-regandowner

articles/storage/blobs/storage-blob-upload.md

@@ -5,7 +5,7 @@ description: Learn how to upload a blob to your Azure Storage account using the
 services: storage
 author: pauljewellmsft
 ms.author: pauljewell
-ms.date: 07/07/2023
+ms.date: 08/28/2023
 ms.service: azure-blob-storage
 ms.topic: how-to
 ms.devlang: csharp
@@ -96,6 +96,9 @@ The following table shows the available options for the checksum algorithm, as d
 | MD5 | 2 | Standard MD5 hash algorithm. |
 | StorageCrc64 | 3 | Azure Storage custom 64-bit CRC. |
 
+> [!NOTE]
+> If the checksum specified in the request doesn't match the checksum calculated by the service, the upload operation fails. The operation is not retried when using a default retry policy. In .NET, a `RequestFailedException` is thrown with status code 400 and error code `Md5Mismatch` or `Crc64Mismatch`, depending on which algorithm is used.
+
 ### Upload with index tags
 
 Blob index tags categorize data in your storage account using key-value tag attributes. These tags are automatically indexed and exposed as a searchable multi-dimensional index to easily find data. You can add tags to a [BlobUploadOptions](/dotnet/api/azure.storage.blobs.models.blobuploadoptions) instance, and pass that instance into the `UploadAsync` method.