You may utilize an importer tool
https://transactionpro.grsm.io/qbo
Prepare the PO data with the following template
RefNumber | APAccount | Vendor | PrintOnCheckName | TxnDate | DueDate | SalesTerm | POStatus | ShipMethodName | Class | AddressLine1 | AddressLine2 | AddressLine3 | AddressLine4 | AddressCity | AddressState | AddressPostalCode | AddressCountry | PrivateNote | Currency | ExchangeRate | ExpenseAccount | ExpenseDesc | ExpenseAmount | ExpenseBillableStatus | ExpenseBillableEntity | ExpenseClass | LineItem | LineDesc | LineQty | LineUnitPrice | LineAmount | LineBillableStatus | LineBillableEntity | LineClass |
101 | Staples | 15/05/2020 | 15/05/2020 | Open | UPS | 100 Houston Street | Suite 2000 | San Diego | CA | 12345 | Internal Use | Office Supplies | For Anne | 25,1 | ||||||||||||||||||||
101 | Staples | 15/05/2020 | 15/05/2020 | Open | UPS | 100 Houston Street | Suite 2000 | San Diego | CA | 12345 | Internal Use | Telephone | Phone Cards | 50,25 | ||||||||||||||||||||
101 | Staples | 15/05/2020 | 15/05/2020 | Open | UPS | 100 Houston Street | Suite 2000 | San Diego | CA | 12345 | Internal Use | Office Furnitue | New Chairs | 300,18 | ||||||||||||||||||||
185 | Green's Taxi Service | 15/05/2020 | Net 30 | Closed | 1 Main Street | San Diego | CA | 12345 | Transportation | 125,13 |