In BW/4HANA SAP offers you the possibility to link restricted or calculated key figures across different Composite Providers. The advantage of the link components concept is that they can automatically synchronize whenever you make changes in the source or master component. If you are not familiar with this concept.

SAP Help:

"A linked component can be automatically synchronized whenever changes are made to the corresponding source component.

Example scenario: You have two highly similar InfoProviders, IP_A and IP_B. You have created the query Q_A for IP_A. You now want to create the query Q_B for InfoProvider IP_B. You want this query to be very similar to query Q_A and to be automatically adjusted whenever changes are made to query Q_A.

To do this, you use the link component concept: You create the linked target query Q_B for source query Q_A. This is more than just a copy, as the system also retains the mapping information. This mapping information makes it possible to synchronize the queries."