Default account "Inventory Received Not Yet Billed" error when creating a bill from a PO.
Issue: When creating a Bill from a PO, the error message appears about a missing account called "Inventory Received Not Yet Billed" in the default account settings.
Solution: Settings, open the Accounting tab and enter a default account for "Inventory Received Not Yet Billed". If this account does not exist, create one in the Chart of Accounts. This account is typically an Other Current Liability account but you should consult with your Accountant to determine the right account for this setting.