Terminal services allows publishing different applications, which an subsequently be accessed by using RDPWeb, and also as RDP applications in PAM.
In Terminal Services, each new RDP application can be defined with specific command line arguments, so for instance, it would be possible to publish internet explorer (C:\Program Files\iexplorer.exe) and specify as its argument the URL that we would like ot access (for instance https://aap1.example.com).
As a result it i possible to publish different URL in a remote Windows server as different applications. The different URL must be specified as command line arguments.
However, CA PAM does not have the same format for defining a remote RDP service to be published: there is only room for the path to the remote application and no explicit reference to its arguments.
This means that PAM expects to launch exactly what is defined in its application definition. For instance, let's imagine we want to launch
https://myapp.example.com
using Internet explorer
However, trying to use the newly created RDP service would result in a "Permission denied" error and nothing would be run