Hi Nakazawa •,
Welcome to Microsoft Q&A forum.
As I understand, you are trying to deploy an Azure Database for MySQL flexible server from Point In Time backup source and it always fails with "Conflict" status.
In Azure Database for MySQL flexible server, performing a point-in-time restore creates a new server from the flexible server's backups in the same region as your source server.
Could you please check the Region of the original server?
It's created with the original server's configuration for the compute tier, number of vCores, storage size, backup retention period, and backup redundancy option. Also, tags and settings such as virtual network and firewall are inherited from the source server. The restored server's compute and storage tier, configuration and security settings can be changed after the restore is completed.
Check server name which you give for the new one.
Ensure that network configurations (e.g., VNet, subnet) are correctly set up and that there are no conflicts.
Follow this https://learn.microsoft.com/en-us/azure/mysql/flexible-server/how-to-restore-server-portal for in case you are using restore to move a server from Public access to Private access.
Let us know your finding.
Awaiting your reply.
Thanks