how does position values auto fill while creating the requisition

Summary:

Content (please ensure you mask any confidential information):

Hi,

I understand we are using position to create requisition, and whenever we tag the the position fields get auto populated while creating the req.

How does that happen ? where do we define this such that it gets populated , we are not using auto complete rule as well.

Asking because now the values are not populating since Friday and we haven't made any changes.

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

24c