How to disable Parallel processes execution on Job Service

Do you use a sync project or a script to talk to the target system? If it is a script you can just use the ScriptExecSingle(32) task. It ensures that a specific process step is serialized inside of one queue.

Another option is to set the number of execution slot for the queue running your jobs to 1 for the slot type you are using (internal, external or external32).

Markus Weiss-Ehlers Is it possible to accomplish this with a powershell script as well? I do not see a powershellcomponent option to exec single.

Markus Weiss-Ehlers Is it possible to accomplish this with a powershell script as well? I do not see a powershellcomponent option to exec single.

No, there are no special ...Single... tasks for the PowerShell or the PowerShellComponent4. But you can either set up a special queue for handling these jobs where the external slot number is set to 1 or you set the max. instance property of the process task to 1. But be aware that this is then a global setting.