Hi @rahul janothar ,
it looks like a VPN Gateway with a related Public IP address is existing in the resource group you want to move.
There are some limitations in Azure to move resources, depending on resource type, source and target: https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/move-support-resources#microsoftnetwork
In the worst case you might have to delete the VPN Gateway with related resources in the source and deploy a new one with the same settings in the target.
Without knowing what kind of resources you are trying to move from source to target it's not that easy to help.
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten