SLA to change Cost Center Code in GRN accounting specific Purchase Order

Summary:

Hi, We have a purchase order created in last year and currently partially received, invoiced and paid. My client wants to change the cost center for the remaining PO amount. I found that there is no way to change the cost center code on PO distribution if it is partially billed and paid.

Now we are thinking to customize the SLA to change to cost center code on GRN accounting (We are using 3 way matching). Kindly help to build the custom rule to achieve this.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):