The relation mapping consists of two sheets: RelationMapping and ConnectByFields. These sheets are used for adding/removing relationships between components.

RelationMapping is based on the OPPIDProcessFunctional ECRelationshipClasses of the OpenPlant Schema. These sheets help to specify relationships: "Relation" name and a pair of "Source" - "Target" OpenPlant ECClass names.

If a value of 1 is set in the "Disable" column, the value is not processed.

the ConnectByFields sheet is for specific cases when objects are connected through a reference property (Component ID). The direction can be Backward (Component with Property will be Source and Class will be Target) and Forward.