On selection of replacement position, system can set validation to select existing approved position

Summary:

This is an enhancement requirement for my client while they are hiring for replacement positions, the existing position codes are not reused.
Instead, new codes are created and assigned to new hires, leaving the old codes active.

Can anyone sugguest a workaround for this ? Can we setup a validation to use only existing approved position while replacement position option is selected while creating a Job Requisition using Position option under the 'Use' Section.

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