Invoice is partially posted to A/R and G/L in Mar 2022

Invoice is partially posted to A/R and G/L in Mar 2022, Financial period is already closed. However, still we have lines of the Sales order clubbed under the same invoice at open status i.e. 580 620. While trying to do Sales update using invoice number in data selection and specific AR , GL date in processing option, we are seeing PBCO error. Business is unwilling to open the financial period of Mar 2022. Please suggest any other workaround in this case to close the open SO lines and post the balance amount of invoice to AR, GL. I am using JDE 9.1