Here are the soil layer rules for LID’s in SWMM5.... If any of these are wrong you will get an Error 185 message
Soil Porosity > Field Capacity > Wilting Point
//... check soil layer parameters
if ( LidProcs[j].soil.thickness >= 0.0; 0.0 )
{
if ( LidProcs[j].soil.porosity <= 0.0
|| LidProcs[j].soil.fieldCap >= LidProcs[j].soil.porosity
|| LidProcs[j].soil.wiltPoint >= LidProcs[j].soil.fieldCap
|| LidProcs[j].soil.kSat <= 0.0
|| LidProcs[j].soil.kSlope <= 0.0 )