Is AutoCAD LT compatible with CAD Integrator functionality?
No, it’s not compatible. See the Compatibility Matrix for IBM TRIRIGA CAD Integrator/Publisher. At the bottom, the comments provide more details.
For example: “My understanding is that the CAD Integrator does not work with the LT versions of AutoCAD because LT versions do not support database connectivity and cannot use programming tools such as VBS, LISP and ObjectARX.”