Purchase Invoice posted is wrong

Issue: 

A PI (Purchase Invoice) has been raised with incorrect details and posted

Resolution:

You can click on the "Actions" button at the top right and choose the option "UnPost"

If the purchase invoice has been exported to your accounts package then it will not be possible to unpost the purchase invoice. You will need to do the following to cancel out the error:

• Create a negative PO to cancel the original PO
• PO cost on that phase is now reported as 0
• Create a dummy supplier credit to go to accounts to cancel the original PI, and allocate that to your negative value PO
• Create a new PO. PO cost on the phase is now reported correctly
• Re-enter the PI details (the new PI will have a different reference than the original), assign it to the correct PO and post.