TUFLOW Message 2541
ERROR 2541 - SX polygon selects no cells.
CHECK 2541 - SX polygon selects no cells, centroid used.
No cell centre falls within SX polygon. If the message type is "CHECK", the SA polygon centroid still falls within the active model domain and the centroid will be used to choose the nearest cell as a connection between 1D and 2D. If the message type is "ERROR", the SA polygon centroid falls outside the model and the TUFLOW will exit with error.
Review the SX polygon size and check if it is located inside the active model domain.