How to stop edit by system.One of my customer ledgers,I'm Posting Paymentreceived amount,it automatically adjusted with sales invoices.it's affecting PY transactions also

Let me address your question about why your customer's ledgers were affected when you tried to edit their payments, Akhila.

To begin with, may I ask what happened to your previous transactions when you tried to edit the payments you received?

In the meantime, let's talk about possible reasons why your customer's previous transactions were affected when you tried to edit their received payments and how we can prevent the system from causing this issue.

You may have turned on the Automatically Apply Credits feature in the Accounts and Settings. Doing this will automatically apply your customer's open credit to their open transactions.

To resolve this, let's turn this feature off:

1. Navigate to the Gear icon, then click Accounts and Settings.
2. Select Advanced, then locate the Automation.
3. Click the Pencil icon, then turn off the Automatically Apply Credits.

Once done, your customer's previous years' transactions, such as invoices, will not be affected when you edit their payments.

Moving forward, when editing your received payments, please ensure you're editing the amount per line item. Please refer to the screenshot below:

Additionally, you can check out these articles that can help you run reports:

• Run reports in QuickBooks Online
• Customize reports in QuickBooks Online

Let me know if you need further assistance with your customer's ledger. Keep safe.