The update rules for &/& can not be activated, since & is not active

What causes this issue?

The update rules cannot be activated as the InfoCube only exists in
version D.

System Response

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

How to fix this error?

First activate the InfoCube and then try again.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.