To reply directly to your query, Sachin, ISTD doesn't have a Competency Model. It's unlikely they ever will, as their members do very little to contribute and build it up. It's not even recognized, and most people don't know what it stands for. It seems to have lost its credibility, but that's just my opinion.
To the rest of you who have tried answering Sachin's query, he is not referring to the ADDIE model. Whoever mentioned that should know what it is a model for, or the Lord save your organization from such ignorance.
Here's the Backstory
ASTD, the American Society of T&D, as we famously know, has progressed far ahead and aggressively established the credibility of Learning & Development as a respected profession in the US. They have done this by involving the top leaders of corporate America. They have used real industry feedback and cases to refine training approaches. They have qualified psychologists developing and testing organizational and learning theories.
The very famous four levels of training measurement, the Kirkpatrick model, were officially adapted by ASTD and made famous worldwide by making Kirkpatrick their esteemed member. He retired two years ago.
So, they invent, and the rest of the world consumes their concepts, despite them being a major failure when it comes to localizing those programs or models. These are based on American business culture, and they assume they can work with that as it benefits them. For the rest of the world, we have to adapt them to our cultures and corporates, which is not an easy task.
ASTD updates their competency model year-on-year, which essentially outlines the competencies required by an L&D professional working in the US. They have their certifications and levels mapped to that. ASTD is very disciplined and organized in its operations.
Sachin, I assume your query is answered, or the Lord save me from my ignorance in poking my nose into this.
Cheers.