Storage location for custom .NET DLLs
Once you have created a .NET .dll file for Sage CRM, you must store it in the CustomDotNet folder located in the Sage CRM installation folder.
The default location of the CustomDotNet folder is as follows:
%ProgramFiles(x86)%\Sage\CRM\CRM\CustomDotNet
You can copy your .NET .dll file to the CustomDotNet folder manually or specify that folder as the build location in the Microsoft Visual Studio project properties.
The CustomDotNet folder contains the RelatedEntities.dll file. Do not move, delete, or rename this file, as the Relationships feature of Sage CRM depends on this DLL.