New-AzSqlDatabaseExport Can't login with SQL administrator

[HelloValue]

Description

i want export azure sql-database to storage account.
i use the following command：
$exportRequest = New-AzSqlDatabaseExport -ResourceGroupName MyGroup -ServerName mytestdbserver1 -DatabaseName MyTestDb -StorageKeytype StorageAccessKey -StorageKey TGEdegtetQoHFgrgerer5S+LGwb+Ty2OPHxSHlloworldQhtest== -StorageUri https://test.blob.core.testcloudapi.cn/mytest-container/MyTestDb-2019-5-8-11-26.bacpac，
then input my login account and password.

Steps to reproduce

$exportRequest = New-AzSqlDatabaseExport -ResourceGroupName MyGroup -ServerName mytestdbserver1 -DatabaseName MyTestDb -StorageKeytype StorageAccessKey -StorageKey TGEdegtetQoHFgrgerer5S+LGwb+Ty2OPHxSHlloworldQhtest== -StorageUri https://test.blob.core.testcloudapi.cn/mytest-container/MyTestDb-2019-5-8-11-26.bacpac

Environment data

os：windows 10
azure powershell：2.0.0
power shell：5.1
azure location：china

Name Value

---

PSVersion 5.1.17134.590
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.17134.590
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

Module versions

ModuleType Version Name

---

Script 1.5.2 Az.Accounts
Script 1.9.0 Az.Sql
Manifest 3.1.0.0 Microsoft.PowerShell.Management
Manifest 3.0.0.0 Microsoft.PowerShell.Security
Manifest 3.1.0.0 Microsoft.PowerShell.Utility
Manifest 3.0.0.0 Microsoft.WSMan.Management
Script 1.2 PSReadline

Error output

New-AzSqlDatabaseExport : 0: There was an error that occurred during this operation : 'Error encountered during the service operation. ; Exception Microsoft.SqlServer.Man
agement.Dac.Services.ServiceException:Unable to authenticate request; Inner exception System.Data.SqlClient.SqlExceptio
n:Login failed for user 'DbAdmin'.; '
所在位置 行:1 字符: 18

• ... rtRequest = New-AzSqlDatabaseExport -ResourceGroupName MyGroup ...

•             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

  • CategoryInfo : CloseError: (:) [New-AzSqlDatabaseExport]，CloudException
  • FullyQualifiedErrorId : Microsoft.Azure.Commands.Sql.ImportExport.Cmdlet.NewAzureSqlDatabaseExport

[HelloValue]

sorry