bathymetry file with braided branches

I am running a river model with 9 branches and 47 segments. Below is the branch geometry block BRANCH G US DS UHS DHS UQB DQB NLMIN SLOPE BR1 2 5 0 8 0 0 1 0.004 BR2 8 10 5 13 0 0 1 0.004 BR3 13 15 10 18 0 0 1 0.004 BR4 18 22 15 25 0 0 1 0.004 BR5 25 29 22 32 0 0 1 0.004 BR6 32 37 29 -1 0 0 1 0.004 BR7 40 40 19 22 0 0 1 0.004 BR8 43 43 25 29 0 0 1 0.004 BR9 46 46 32 37 0 0 1 0.004 When I run the pre processor, it is giving an error message inside the bathymetry file. the last that checks is the Surface Water Elevation. Branch 7 is a braid of branch 4, branch 8 is a braid of branch 5, and branch 9 is a braid of branch 6. Branches 7 through 9 have only one real segment each. When I remove branches 7 through 9 from both con file and bathymetry file, the pre processor runs fine. I do not know why the model does not accept the way I set up the branches. Any help will be greately appreciated.