002100: The active map does not contain any features layers related to the input network layer.


The Create Diagram Layer Definition tool requires the active map to reference at least one feature layer related to the input network layer.


Add feature layers related to the network layer to the active map.

Alternatively, open the map referencing the network layer specified as input and click this map tab so it becomes the active map view. Then, verify this map references feature layers related to that network layer.