Default the DFF segment based on the selection of the previous DFF segment

Summary:

Summary:
I have a requirement, where client want to auto populate a DFF segment based on the previous segment value.

Ex: Dff name : Contract Headers

I have 2 segments

Segment1 is Primary Account code which has list of account code and account description values.

Segment2 is Primary Account Code Description which is text box.

When we select any account in the Segment1……Segment 2 should get auto populate with corresponding account description.

note: it has only Contract Id parameter in the derivation value.

Can anyone please provide guidance on how to achieve this?

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