I have several clients in my AR reports that show pennies caused by rounding errors. Is there a way to correct this?

Welcome to the Community, Nadia. We can correct these rounding errors by identifying the affected customers, verifying the source, and then create a Journal Entry.
 

Here's how:
 

First, let's identify the affected customers by pulling up the A/R Aging Summary or Customer Balance Detail report. Take note which customer show pennies caused by rounding errors then click on each customer's  balance.
 

Next, let's verify the source. Check if the pennies are from invoices, payments, or credits. Ensure these aren't unmatched payments or partial credits that need proper application.
 

Lastly, once confirmed the discrepancies are due to the rounding errors, you can create a Journal Entry. This method writes off the small amounts without affecting your revenue accounts. Before proceeding, I suggest you invite your accountant for guidance before making adjustments.
 

Keep us posted if you have any other concerns or additional questions.