Formula to get code of a parent

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Shawnm
Shawnm Member, ALL USERS, Partner, Certified Model Builder Posts: 5 Contributor

Hi,

What formula can be used to get the code of a parent list inside a flat module? 

Shawnm_0-1641988990622.png

for example in this particular module the parent is a numbered list and I want to bring its code in the 'Code' line item( Text Format). What method can I adopt to achieve the same?

 

Thanks