@Vinod Survase, Thanks for posting in Q&A. To rename devices in bulk via Intune, you can use the Bulk Device Actions feature. This feature uses the same rules as renaming a single device. You can try the name format like ABC-{{serialnumber}}
https://learn.microsoft.com/en-us/mem/intune/remote-actions/device-rename#bulk-rename-devices
Hope the above information can help.
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