If you have a GST# you are already claiming the GST you charged there and do not need to enter it in your return. It is not advised to Refile before you receive your Notice Of Assessment. For clarification, please contact the Canada Revenue Agency (CRA) by calling them at 1-800-959-8281 and they will be able to inform you on how you should be entering your GST or not according to your personal information.
Thank you for choosing TurboTax.
