Can't delete vNet(subnet) bacause of delegated to Microsoft.DBforMySQL/flexibleServers.

YOUJIN JANG
1
Reputation point
I want delete test_group-vnet and CC2-STG-VNet.
But their subnets are using by serviceAssociationLinks/dbSubnet-service-association-link.
Both subnets delegated to Microsoft.DBforMySQL/flexibleServers.
Other community said, "create same name service and try delete."
But I forgot flexibleServer's name.
Please help me. How can I do?