Integration CAD 2020 and sewercad not working
Hello Mahmoud,
Make sure that you have a compatible version of SewerCAD to use with AutoCAD 2020. The following link includes compatible versions: Platform Compatibility.
If the integration works but you are getting a message that says "There is no valid WaterCAD for AutoCAD licenses. WaterCAD is unloading," make sure you have a license feature that includes AutoCAD integration. This link has details on this.
If this doesn't help, more information is required.
Regards,
Scott Kampa
Bentley Technical Support