Duplicate Payment & Sales Receipts I have recently seen 3 cases where the deferred payment manually recorded on a date also has a duplicate sales receipt. Is this a bug?

No. It's not a bug, maurociaccio.

If the payments are from the Banking page, there's no need to enter a Sales Receipt. Instead, we'll have to match it to the existing transaction. In this case, we'll have to undo the duplicate transactions. I'll show you how:

1. From the Banking menu, select Banking.
2. Go to the Reviewed tab.
3. Tick the duplicate transactions
4. Click the Undo button.
5. Go to For Review.
6. Select the transactions, and then select Exclude Selected from the Batch actions drop-down.

Since you've manually entered the payments, we'll need to delete them. Here's how:

1. From the Accounting menu, select Chart of Accounts.
2. Locate the account and click Account history.
3. Select the transaction and select Delete.

I've added this article to know more about the Sales Receipt transaction: Should I use an invoice or a sales receipt?

I'm just around if you still have other concerns with your transactions.