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How to check the total number of projects created in RTC?

One answer

You could try to use some of the API's. One example https://rsjazz.wordpress.com/2012/12/09/analyzing-a-aroject-areas-members-and-roles-using-the-plain-java-client-libraries/ . You might be able to check for the creation date. If you have JazzAdmin repository role, you should be able to see all project areas.