If you have already created a microservice template, you can check Add New Microservices to the Solution docs. May be it can help.
I was trying to create a new microservices solution by running the GUI template for microservices using ABP Suite. it is not creating the template itself. Please note i have upgraded to 4.3.0-rc.2 version and then tried generating the microservice template from GUI and it is givne error. the error details are given in the above link