PO cancellation

Hi experts,

Please advice to solve below issue.

My client created for 16 items one PO against vendor A and received the goods and made GR

Now he found that the vendor name was wrongly entered and need to change it.

I think first the GR is n to be cancelled and to then PO to be cancelled and create a new PO

To cancel PO there are 16 items, one way is deleting all the items, right

But is there any alternative to cancell PO so that new one can be created afresh