To manually mark Sales Invoices as Paid, please see the 2 options below:

1. Log in and from the Business page, click the required business.
2. On the Customer page, click on Invoices and Credit Notes.
3. Find the Invoice you want to mark as Paid, click on the dropdown on the right side of the Invoice, select Pay, enter the receipt amount, as appropriate, under the Paid heading.
4. To save the allocation, click Save. 

Please note, if you already have a Receipt posted on the account to allocate to the Invoice, please follow the steps below, as completing the above will create a new Receipt, which will cause a duplication.

     OR

1. Log in and from the Business page, click the required business.
2. Click on Banking on the left panel, select Receipts.
3. Find the receipt you want to allocate, and in the dropdown select allocation.
4. Tick the Invoice(s) you want to allocate to the receipt.
5. Click Save to save the allocation.

Please note, your Invoices will show as Part Paid if you have not allocated the full Invoice amount, if your client pays in installments, etc.