Default Assignment DFF value in Create Offer for an Internal Candidate based on existing Assignment

Requirement:

We have a requirement to default assignment DFF value in Create Job Offer Transaction for Internal Candidate's job applications.

Use Case Details:

When promoting or transferring an internal candidate through recruiting (Internal candidate applying through opportunity marketplace) , we aim to have the rule automatically set the Assignment DFF (entitlement date) on the 'Create Offer' page to the existing entitlement date from Core HR. This is crucial, as the value is not currently transferring from Core HR to Recruiting.

We have submitted the use case, and it has been approved by the Autocomplete team.

However, we are encountering difficulties in accessing the Assignment DFF value from Core HR to set it as a default. Kindly recommend a way to access the existing assignment DFF value for Internal candidates.