Hi - I received a 221(g) asking additional details on petition and project description. Since I work for a product company ,most of the projects we are involved in are of short term in nature and pre-sales oriented...My company responded with a typical roles responsibilities document in line with what was filed during my petition. I again got another 221(g) asking specifically for project details.
I had a discussion with my company immigration and they don't want to share project details as they think it might set a wrong signal that I work for multiple projects as a sub-contractor working for client v/s working for company (which is not the case). They are suggesting to send a Manager letter providing validation of my roles and responsibilities.

Kindly help as to how to respond to project details query.