Purpose of "Justification" field on Requisition header

Summary:

Purpose of "Justification" field on Requisition header

Content (required):

can someone please explain what is the purpose of "Justification" field in Requisition Header and how can we use it? Any value/text entered in this box, is it passed onto Purchase Order and stored somewhere in the PO after REQ is approved?

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

22c

Code Snippet (add any code snippets that support your topic, if applicable):