No SEM destination is known for virtual cube &1

What causes this issue?

The RFC destination for the SEM-BCS system is unknown.

System Response

In SEM-BCS, you have decided to work with a remote BW, and have created
an RFC destination for the BW system in databasis maintenance.
To be able to carry out BEx Reporting with consolidated data however,
you also need to create a BW -> SEM destination.

How to fix this error?

In SEM, start transaction UC01 and call up the program for maintaining
RFC destinations in the BW area.
Enter information here for the virtual Cube &V1&.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.