The Dissolve Network tool cannot dissolve the input network dataset. Some common reasons for the tool failure are as follows:
- The input network dataset is not built.
- The output geodatabase already contains tables, feature classes, or network datasets that will be created by the tool.
Review the messages to determine the possible reasons for the failure. If the input network dataset is not built, use the Build Network tool to build it. Create a new geodatabase and specify it as the output geodatabase workspace.