Error with Run Program Service in invoke runbook.

Question

I made main runbook (it do some things) and on the end i pute invoke runbook. In this child runbook i have
Run Program activities with Java srcipt. 
When started this rb finaly i get error Could
not start Orchestrator Run Program Service service on 10.56.7.17 - Access is denied. (code 5), 
but when manually i run this child runbook with any chaneges and this same date it works well. 
In this Run Program i set that it ryn from admin acount but that don't nothing changes. 
Where is problem?

Answer 1

When you run it manually (with Runbook tester I assume) the Runbook will use
your admin credentials to perform all of the actions. When it runs scheduled or with an invoke from somewhere else it will use the credentials of the user account you've assigned to the Runbook service.
As a test, check which user is assigned to the service (via services.msc) and make that one a temporary local admin on the target machine. If it works, then you know it's permissions related to that specific account.
I give up ;), Yes, I testing by Runbook tester. But not shure that we understand :)
I  have two scenarios (i can't put images, i need to verify my account).
1) One runbook. Exp. name" child. Inside is Run Program, that program is on different server.
Its work only when in options this activity i set local admin account from that server.
2). I created new runbook - parent. In this I put invoke runbook linked to that child. I do not change anything else. Now i will try run it (from tester, web console or scheduled) i get error
Could not start Orchestrator Run Program Service service on 10.56.7.17 - Access is denied. (code 5). 
What I do wrong, what I think wrong?