Added template file name restrictions

Author: whhender

articles/purview/how-to-create-import-export-glossary.md

@@ -11,7 +11,7 @@ ms.date: 09/27/2021
 
 # How to create, import, and export glossary terms
 
-This article describes how to create a business glossary term in Azure Purview data catalog, and import and export glossary terms using .csv files.
+This article describes how to work with the business glossary in Azure Purview. Steps are provided to create a business glossary term in Azure Purview data catalog, and import and export glossary terms using .csv files.
 
 ## Create a new term
 
@@ -66,7 +66,7 @@ Notice that term names are case-sensitive. For example, `Sample` and `saMple` co
 
    :::image type="content" source="media/how-to-create-import-export-glossary/select-term-template-for-import.png" alt-text="Screenshot of the Glossary terms page, Import terms button.":::
 
-3. Download the csv template and use it to enter your terms you would like to add.
+3. Download the csv template and use it to enter your terms you would like to add. When naming your template csv file, the name needs to start with a letter and can only include letters, numbers, spaces, '_', or other non-ascii unicode characters. Special characters in the file name will create an error.
 
    > [!Important]
    > The system only supports importing columns that are available in the template. The "System Default" template will have all the default attributes.
@@ -96,4 +96,4 @@ You should be able to export terms from glossary as long as the selected terms b
 
 ## Next steps
 
-Follow the [Tutorial: Create and import glossary terms](tutorial-import-create-glossary-terms.md) to learn more.
+* For more information about glossary terms, see the [glossary reference](reference-purview-glossary.md)