Hi @Anonymous,
1)check your node connectivity in revit for any unconnected node. for this you can use the filter tool in revit inorder to display the connected and unconnected node.
2)Check for any beam or column or slab analytical overlaping. if it is there you could not proceed with your analysis in robot until you resolve this.
3)For Anlytical model location always use the automatic detection method. if something has to be adjust then only use the manual adjustment.
4) Always check how you beam is connected to the column. if beam is going to place not at the center of column then change the analytical link
property of the beam
5) Also check this tool. it might help you to some extent to correct your anlytical model.
6) when you draw a slab use the pick support tool option. it will will help you place the anlytical edge of the slab at the beam analytical locations. otherwise some times the the slab edge goes beyond the anlytical beam locations and you may have to manually adjust the slab line.
7)Check the properties of your level and it should be structural otherise no story information will transfer to robot and it might get affected your seismic analysis.