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Hydraulic Structures with a downstream receiving cell. Both the upstream and the downstream cells must be in the same subdomain
Cell Connectors. Both end of the connectors must be in the same subdomain
Withdrawal/Return boundaries. Both the withdrawal and the return must be in the same subdomain
Flow Boundary with group redistribution of flows. All cells in the boundary group must be in the same subdomain
Model grids that do not have two columns of extra cells on the North, South,East and West sides. It is a requirement with the MPI model that there be a buffer zone around the model cells of at least two rows and columns. Without this the model may run but the results will be incorrect. Check this with the View Cell Map option.
To modify any of the listed boundaries so that they follow the restrictions mentioned above it is easiest to utilize View Cell Map for viewing and editing. This can can be used to move the cell blocks either manually or automatically.
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