Change in behavior between V11 and V12 :PUT_ATT HOST together with hostgroup

Products

• CA Automic Workload Automation - Automation Engine

Issue/Introduction

In a job the Host group should be set by function :PUT_ATT HOST. The job fails with:
 

04.04.2017 14:24:41 - U00020916 Runtime error in object 'JAC#SCM.ALL.JCLLOAD_MBM8.UX.JOBS.COPYTEMP(1)', line '00001': Changing the Agent is not allowed because the resources of the agent has already been reserved.

It affects all kinds of jobs that have a Host assigned. As Host a Host Group is assigned:
 

<Please see attached file for image>

In the preprocess of the job, PUT_ATT is used to assign one of the hosts from the host group as dedicated host:
 

<Please see attached file for image>

In V11 this works no matter if Generate at runtime is checked for the job or not.

In V12, when Generate at runtime is set, it fails with

 

04.04.2017 14:24:41 -  U00020916 Runtime error in object 'JAC#SCM.ALL.JCLLOAD_MBM8.UX.JOBS.COPYTEMP(1)', line '00001': Changing the Agent is not allowed because the resources of the agent has already been reserved.

Environment

Release: AUTWAB99000-12.0-Automic Workload Automation-Base Edition
Component:

Cause

This is not a bug. It was implemented in the context of the new V12 feature "Accelerated Workflow Completion" where Agent group resolution takes resources into consideration.

Resolution

No fix