Can i save GSTR1 on GST Portal ?

Hi there, shivaansh-sales.

May I know if have you received any error messages when saving it ? Also, one of the possible reasons you're unable to save it is that the browser you're using had a data issue. Let's log in to your QuickBooks Online (QBO) account using a private browser. To do so, press this shortcut key on your keyboard:

• Google Chrome: Ctrl + Shift + N
• Safari 11 or newer: ⌘ + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P

If this works, it means that you need to clear the browser's cache so the system can start fresh. If you get the same result while using a private browser, I recommend switching to a different one.
 

You can review the message that you're getting. Then, follow the steps in this article depending on the code that's showing up: JSON Errors in GSTR1, GSTR3B.

I would also like to add more articles for if you need more details or references about GSTR reporting:

• The GSTR3B (GSTR 3B) Report in QuickBooks
• Know More About GSTR-1 Summary and Detailed Reports in QuickBooks
• GSTR-1 Save 

Please let me know how it goes in the comment section below. I'm only a post away if you have any follow-up questions. Have a great day, shivaansh-sales.