Availability to change BU in Job Requisition

Summary:

Is it possible to define a Default BU based on the Primary Location field? Or does someone have any workaround for this scenario?

Content (required):

We have several BUs wrongs in the req, because the Hiring Manager tags the wrong BU, as our Job Requisition is based on Job, I can´t change the BU once we selected it in the first stage.

I've already created an idea (https://community.oracle.com/customerconnect/discussion/669619/change-the-business-unit-on-an-existing-job-requisition) for requirement, but since March I don't have any update.

Then, we would like to create a rule to define the default BU based on the Primary Location field, or some available workaround to change the BU