The image at the bottom shows the rules for Force Mains in InfoSewer and H2OMap Sewer:
1. Gravity Main2. Wet Well
3. Pump
4. Chamber Manhole
5. Force Main if you have many force mains the node BETWEEN two force mains has to be a Chamber Manhole
a. The error messages for this are now rigorously enforced and they may not have been in past versions
6. Loading Manhole7. Gravity Main