Hello Amit Singh
Azure Database Migration Service (DMS) does not directly support migrating Azure SQL Databases (PaaS) between Azure Active Directory (AAD) tenants.
- DMS is designed to handle migrations to Azure SQL Database from sources like SQL Server, MySQL, etc., but not from one Azure SQL Database to another across tenants.
Here are supported scenarios for Migration using Azure DMS:
Alternative methods to migrate Azure SQL database to a different subscription and different tenant:
- Copy database
- You can create a geo-secondary in a subscription different from the subscription of the primary under a different Azure Active Directory tenant
- Using SQLpackage tool to Export/Import bacpac file.
Here in below documents you can refer to other alternative methods for copy Azure SQL database to a different subscription and different tenant