Ref: https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/229400/bentley-swmm-engine-failure-when-run-24-hours/
Additional to the above, I tried exporting to MicroDrainage but unfortunately, I was not able, I tried the Rational scenario then I tried another scenario but did not get the exported file.
Regards,
Mohamad
Hello Mohamad,
After disusing issue internally, it is found that export option is working as designed, that is how MicroDrainage expects pipe labeling i.e in branch labeling format, hence you will need to relabel the pipes in storm-sewer products to be in branch numbering format using tool Branch labeling (Tools > More > Branch Labeling). And then export the model as Microdraiange file it would work. See below wiki.
Error exporting storm-sewer model to Micro Drainage – Labels do not contain pipe numbering in the correct format
Sushma Choure
Bentley Technical Suppport