When trying to run the local Client Integration with a PTC Integrity Project that is not named "project.pj" Jenkins always throws the following error:

for : #p=/Test/Test.pj
Preparing to execute si projectinfo for #p=/Test/Test.pj
[LocalClient] Executing Sandbox Verification
[LocalClient] Executing si sandboxes
[LocalClient] si sandboxes response:0
[LocalClient] Searching Sandbox: : D:\workspace\TestPTCLocalClient, for Project Config: [/Test/Test.pj], Build Revision: [null]
[LocalClient] Sandbox not found in : D:\workspace\TestPTCLocalClient, for Project Config: [/Test/Test.pj], Build Revision: [null]
[LocalClient] Executing CreateSandbox D:\workspace\TestPTCLocalClient
[LocalClient] CreateSandbox response:0
[LocalClient] Clean Copy Requested :true
[LocalClient] Starting Resync Task..
[LocalClient] Executing IntegrityResyncSandboxTask D:\workspace\TestPTCLocalClient
[LocalClient] Executing ResyncSandbox D:\workspace\TestPTCLocalClient
[LocalClient] IntegrityResyncSandboxTask invoke Exception :MKS125216: The sandbox file d:\workspace\TestPTCLocalClient\project.pj is not registered with the system.
hudson.AbortException: [Local Client] Failed to resync Workspace!

When switching to Server Integration Point it works as designed.

This way the local Client configuration is not usable.