English to French Tech/Engineering Computers: Systems, Networks brevet

In the method of FIG. 5, administering, by the backup feed adapter, operation of the backup feed adapter in dependence upon whether the backup feed adapter state is synchronized with the active feed adapter state includes setting the backup message stream state to match the active message stream state if the backup feed adapter state is not synchronized with the active feed adapter state.
Setting the backup message stream state to match the active message stream state according to the method of FIG. 5 may be carried out by adjusting a message sequence number counter...

J'ai du mal à y voir clair avec la formule "setting... to match".
Faire correspondre tel état avec tel autre ?

Merci d'avance.