What is the use of the "Other Requisition Title" field when creating a job requisition

Summary:

Use of "Other Requisition Title" field when we create a job requisition

Content (please ensure you mask any confidential information):

The field "Other Requisition Title" is visible when we create a job requisition (see highlighted in yellow in screenshot below).
What is the use of this field?

When we fill this field, it does not appear neither on internal career site nor on external career site.

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