How to modify total and subtotal in purchase order

I’m using purchase_order_update When the update method modifies the total and subtotal of Po, it receives an error prompt. There are no total and subtotal fields

Hello @zhenhubhqy!
Welcome to the ShipHero Public API Community!
Can you share the request ID if you are getting one? That way, we can trace the API call.
If you still have the error you are getting, could you please share it as well?
Happy Monday!