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Kiran PandiyanKiran Pandiyan 

How to change the object header from Auto Number to Name ?

User-added image
I need to Display in the Custom object header the Record name instead of the auto number 
like the one below
User-added image
SandhyaSandhya (Salesforce Developers) 

Salesforce by default shows the Name field for a custom object as header where Name is applicable.
Though, through Feed based page layout you can display custom fields at Highlight Panel in console.

Refer below link
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
Thanks and Regards