GP service: ERROR 000816: The tool is not valid.

Question

I have successfully published a custom GP service from ArcMap. The GP tool is in C#.  The built DLL was registered in both ArcGIS desktop and server through ESRIRegAsm.  The tool run well in ArcMap. But when i run the service, I got the error "Error executing tool.: ERROR 000816: The tool is not valid." Any idea why?

My ArcGIS server version is 10.4.5524

Desktop version is 10.4.5524

.Net framework version is 4.5.1

PS: I also navigated to the directory on Server: C:\arcgisserver\directories\arcgissystem\arcgisinput\{my service name}.GPServer\extracted\v101..., and run the tool there in ArcMap, it run well.

springzhang · Answer

Actually no.

I have already fixed the problem. Thanks!

springzhang · Answer

Thanks, I have already fixed the problem

springzhang · Answer

Sorry for the late reply.

My problem was caused by the wrong input types. In my codes, one of the gp parameters was set to be GPLong, but it was used as String in the implementation part. After I changed the type from GPLong to GPString, the error disappeared. It seems that ArcServer is more strict with the parameter types.

Hope it helps you.