I am new to Zoho Books. I made a mistake entering our Accounts Receivable opening balance, and ideally would like to zero it out. I can edit the opening balance, but I can't zero it out. I'm fine with doing a Journal Entry, and ideally what I'd like to do is credit A/R and debit Opening Balance Adjustments, but I'm getting an error message that "Customer must be chosen for Accounts Receivable account." There is no customer involved here, just correcting an entry I wish I hadn't made! Any suggestions? Thank you!