Srange Error

[Anonymous]

Hello,
in a unstady flow simulation, HEC-RAS show me this error that I have never seen before:

HEC-RAS Error – Incomplete data, the following errors were found:
River: “arno” Reach: “arno” There is an internal Boundary between the first and second cross sections in the reach. In an unsteady analysis, internal boundaries must be more than one cross section away from the end a reach. Copy the top or bottom cross section of the reach to put another cross section between the end of the reach and the internal boundary.

I wish to know what could be the cause and how to fix it.
Thanks

[Anonymous]

Hello, I also have this error. Have you solve this problem?

[cameron]

Do you have a bridge or inline/lateral structure or an inflow just upstream/downstream of a junction?

[Anonymous]

Yes.

But now I solved this problem, I hope you too. Just copy the new cross section.

Thanks for your reply. Can I also ask you a question?

error message below:
Boundary at River: Huaihe Reach: Middle RS: 116185.3
Undefined values found in the time series data. The boundary data must span the computation window.

How to solve this problem?

[BrianS]

Does you boundary time series end before the computation time ends? Are there blank or non-numerical values at any time in your flow file?

[Author]

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