{APIManagement} Fix Azure#17991: Fix Path mandatory bug 'Import-AzureApiManagementApi' cmdlet (Azure#20462)

* {ApiManagement} Fix Azure#16868: Update description of ResourceId param 'New-AzApiManagementBackend' and 'Set-AzApiManagementBackend' cmdlet

Fixes Azure#17991

* Update ChangeLog.md

* Create ChangeLog.md

* Update src/ApiManagement/ApiManagement/ChangeLog.md

Co-authored-by: Jin Lei <54836179+msJinLei@users.noreply.github.com>

Co-authored-by: Jin Lei <54836179+msJinLei@users.noreply.github.com>

Author: RakeshMohanMSFT

src/ApiManagement/ApiManagement.ServiceManagement/ApiManagementClient.cs

@@ -1200,6 +1200,8 @@ public void ApiImportFromUrl(
 
             string soapApiType = GetApiTypeForImport(specificationFormat, apiType);
 
+            apiPath = apiPath ?? string.Empty;
+            
             var createOrUpdateContract = new ApiCreateOrUpdateParameter()
             {
                 Format = contentFormat,
@@ -4494,4 +4496,4 @@ public void GatewayHostnameConfigurationRemove(string resourceGroupName, string
         #endregion
 
     }
-}
+}

src/ApiManagement/ApiManagement/ChangeLog.md

@@ -19,6 +19,7 @@
 -->
 ## Upcoming Release
 * Updated description of ResourceId param 'New-AzApiManagementBackend' and 'Set-AzApiManagementBackend' cmdlet [#16868]
+* Fixed Path mandatory bug 'Import-AzureApiManagementApi' cmdlet [#17991]
 
 ## Version 4.0.1
 * Upgraded AutoMapper to Microsoft.Azure.PowerShell.AutoMapper 6.2.2 with fix [#18721]