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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) 
Hi,

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

https://salesforce.stackexchange.com/questions/179542/can-we-change-the-header-of-the-custom-object-detail-page
 
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
 
Thanks and Regards
Sandhya