Please explain why the GST suspense transaction got 2 transaction was same payment appreared ?

Hi there, services8.

I'll provide an explanation of why the GST suspense transaction shows two entries with the same payment that appeared.

It might be the payment transaction was added instead of matching them. If it's the case, the amount will be duplicated. To sort this issue, I suggest matching the transactions rather than adding them. Match means QuickBooks matched the downloaded transaction with the one you already entered. This links the two so there aren't any duplicates. All you have to do is make sure the match is correct.

Before matching them, I recommend undoing the transaction that already added.

Here's how to undo:

1. From the Banking tab, select Banking.
2. Go to the Reviewed tab.
3. Select the transaction.
4. Click the Batch actions drop-down, and then select Undo.

Once done, you're good to match the transactions. You can click this article to see the detailed steps: Categorise and match online bank transactions in QuickBooks Online. This also provides information on how you can review bank and credit card transactions to avoid double entries.

Please check this link to see different articles to help you manage your Taxes/GST via QuickBooks Online: QuickBooks Online GST Help Articles.

Let me know if there's anything I can help you with. I'm always here to back you up. You have a wonderful day!