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May I know where I made a mistake? I Already have to refer to the following link and I have also attached an example image to show the problem.

Thanks in Advance.

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There are errors that one can get due to several wrong bits. Please refer to the help page Identifying geometric network build errors. Most often these errors have to do something with errors in features' geometry.

I would start with:

1) Click Customize > Toolbars > Geometric Network Editing. The Geometric Network Editing toolbar is added to ArcMap.

2) Add your network feature classes to ArcMap.

3) On the Editor toolbar, click Editor > Start Editing. In the ArcMap table of contents, select a layer that participates in the geometric network.

4) Click the Network Build Errors command. A dialog box indicating the number of errors is displayed, and the features with illegal geometries are selected.

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Its working fine for me thanks.. – Sunil Feb 20 '13 at 8:04
Thanks Mr.Alex, May I know how can i enable Geometric Network Editing tool? After I did start editing that tool was disabled. – RajGovind Feb 20 '13 at 8:22

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