3543425 - Is it Possible to edit the values in PO acknowledgement when the preceding documents are completed?

The question here is to understand the feasibility of making changes or updating the price or any other values in the PO acknowledgement from backend, where the preceding documents like Outbound delivery is released ; Supplier Invoice is paid ; Clearing document is completed

SAP Business ByDesign 

Purchase Order is created and ordered with relevant details. 

From this Purchase order, a PO acknowledgement is created which is not matching the details in the Purchase Order. Supplier Invoices are created and paid with wrong values. 

Is it now possible to change the data in PO acknowledgement which will reflect in preceding documents? 

Corresponding documents like Supplier Invoice and Clearing are paid and completed. At this point, we will not be able to make any changes in the PO acknowledgement document. 

The only way ahead is to cancel / revoke all the preceding documents and then create a new PO acknowledgement for the Purchase Order with the correct values and proceed further. 

Modify PO acknowledgement from backend, incorrect values in PO acknowledgement  , KBA , SRD-SRM-PRO , Purchase Requests and Orders , How To