If there are Customer Invoices or Supplier Bills with Unpaid/Partial payment status and there are so many of them that it would take so much time if you collect them one by one, we provide a feature that makes you can collect all of them at once.
You could choose which invoice you want to collect, or even you could choose all of them. With this feature, you can combine or merge your Account Receivable / Payable from customers or suppliers into one invoice through the Debt menu.
Step 1. Go to Debt, Click More Menu, then Choose AR or AP Collection

Step 2. Click Add Button
Click add to create a combined/merged outstanding bill.

Notes :
Choose Tab AP Collection to create account payable collection for purchase order outstanding bill and go to steps 1 & 2.
Step 3. Input Customer / Supplier Name to Merge Outstanding Bill
Select add then input your customer/supplier name that you want to merge the outstanding bill.

Step 4. Input Payment Detail, then Click Ok

Notes :
Skip this step and click submit if you doesn't want to make payment for the collection.
Step 5. Bulk Payment was Created Successfully

Video Tutorial AR & AP Collection
You might also like to read these articles below :
In case you want to add payment in an invoice you can check Add Payment to Credit Sales / Purchase
You can also check Invoice Aging and Bill Aging Reports
In case you want to limit debts you can also check Setup Debt Limit and Maximum Overdue for Customer