Invoce correction

It looks like you've posted twice about your inventory and invoice concerns.
 

My colleague has already answered your inquiry on your other post. She provided some helpful steps on how to resolve this in the current open period by creating a credit memo for Item A to reverse the original charge, and then issuing a new, correct invoice for Item B to accurately adjust your inventory stock levels.
 

You can view her full response through this link: https://quickbooks.intuit.com/learn-support/en-us/reports-and-accounting/writte-off-invoices-of-closed-years/01/1614450#M239378

Please let us know if you have any other questions or need further help.