AP Invoice Distribution Form >> How to make Project columns mandatory ?

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AP Invoice Distribution Form >> How to make Project columns mandatory ?

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Hello All,

We are on Oracle Financials cloud 18A

This is related to AP invoice distribution form.  When user is creating manual AP invoice, user will go to AP invoice distribution form to enter accounting and project details.  We want to make project coloumns mandatory.  How can we achieve this or anybody have faced similar requirement?

Also, can we make project coloumns mandatory if user enters project segment in accounting field?

E.g. user is entering accounting as LE.Natural Segment.Project segment.Fut1. So, if user enters value is project segment, project coloumns becames mandatory.