Purpose of Requester field on invoice lines

Summary

Purpose of Requester field on invoice lines

Content

Hello, 

What is the purpose of Requester field on invoice lines? When we match the invoice with the PO, the requester on the PO lines does not populate here so I am trying to understand the purpose of this field. 

We have a business requirement to populate the requester on PO line to requester at invoice lines, how can that be acheived?

Thanks

 

 

Version

19C