How to connect Multi Tenant connection in different domain fabric to synapse data pull

[NewUser2025]

I need to connect fabric data warehouse from one domain to different domain with service principle using Azure synapse, I need to copy data from fabric data warehouse to sql database, I need proper steps to give what are the required permissions for service principle and I need required permissions in fabric workspace.
We already created one service principle in Domain-1 Azure (XYZ.123@xyz.com) and we are trying to connect in fabric workspace  with Domain-2 Fabric (abc.123@abc.com) using service principle, we are trying to give fabric workspace access to azure service principle (Domain1) but We are unable to see or connect azure service principle

[NewUser2025]

We have created the Enterprise Application in Domain-2(Fabric) we followed below steps 
Step -1: 

Step-2:

Step-3:

Step-4:

step-5:

Step-6:

Step-7: (We are struck in step7,Tell me the following steps)
How to assign Domain -1(Azure) client id to the Enterprise Application in Domain-2(Fabric) which is created above,Tell me the steps to assign client id

[NewUser2025]

We have created Enterprise Application in Domain-2(Fabric) and where we need to assign Domain -1(Azure) client id to the Enterprise Application in Domain-2(Fabric), can you give me the step by step process

[Vinodh247]

In your case the problem is that the service principal was created in Domain-1 AAD, while the Microsoft Fabric environment belongs to Domain-2 AAD. Fabric can only see service principals that exist in its own tenant, so the Domain-1 service principal must first be registered as an Enterprise Application in Domain-2. Once you do that, Fabric in Domain-2 will be able to recognise and grant permissions to it.

The sequence is as follows:

in Domain-2 AAD, create an Enterprise Application using the client ID of the Domain-1 service principal, then in the Fabric Admin portal make sure that service principal access is enabled, and finally add the service principal as a member of the Fabric workspace with an appropriate role such as Contributor or Viewer. Inside the Fabric data warehouse, create a SQL user for the service principal from external provider and assign it to db\datareader or db\_datawriter roles depending on whether you need read or write.

After these steps, in Synapse you can configure a linked service to the Fabric SQL endpoint using the same service principal credentials and copy data into SQL Database. The key missing piece in your setup is that the Domain-1 service principal must be explicitly brought into Domain-2 as an Enterprise Application before it can be assigned permissions in Fabric.