ZATCA File Naming Convention Query

Hi Everyone,

Since the invoice issue date and time are being sent in UTC, I’d like to confirm the recommended approach for naming the XML file.

311111111111113_20250906T033250_ABC-45.xml

or

311111111111113_20250906T033250Z_ABC-45.xml

The Z (UTC marker) is required in the XML content (inside <cbc:IssueTime>), but it should be included in the file name or not ?