RE: GP 2013 R2 Limited User and 3rd Party Products
Aruna
It is definitely up to the third party company to manage how the security is configured regarding their product. Let's take a very convincing example, have you heard of "Post Master" by Envisage Software Solutions ? It manages integration by automatically posting batches into Dynamics GP without the need to have a GP client to be running, and it doesn't need a GP user license.
In this essence, third party products has their own rules and consideration which are not necessarily controlled by the security matrix of Dynamics GP (full or limited user functionality). Although, the rules should be under the umbrella of the end-user license agreement which has been mentioned by Joshua.
Therefore, if your inquiry is related to a specific third party product, you may discuss this with the third party provider.
Your feedback is highly appreciated,