Agent input variables not showing up in Data Mapping of "Run Agent" activity

[SimeonWang]

Hi all, I created input variables in Agent Builder, but when I try to map them using the “Run Agent” activity in UiPath Studio, the variables do not appear under Data Mapping. What’s strange is that a same workflow was working fine just a week ago. I suspect a recent update broke the argument communication between the RPA workflow and the Agent.

[Dhruba_Jyoti_Kalita]

@SimeonWang Looks like Studio is not picking the latest Agent input schema.

Can you try republishing the Agent, then upgrade the Agent process in Orchestrator and refresh/reselect it in Studio?

Also, if you are using the older Run Agent activity, try with Run Job and refresh the arguments there.

If it is still blank, please share your Studio version and UiPath.System.Activities version. It could be version related.

[Monali_Vekariya (Mona)]

Hi @SimeonWang

Please try removing and re-adding the Run Agent activity, then select the Agent again. Also make sure the latest Agent version is saved/published.

This usually refreshes the input arguments in Data Mapping. Since it was working before, it could also be related to a recent update.

[Prashanth_D (Prashanth_dharavath)]

Hi @SimeonWang,

It looks like “Run Agent” was permanently replaced by Run Job activity of System Activities 25.4.2 causing you the above issue.

Please refer this for more information.

Cannot see input variables in the data mapper

Hi @_MITRA_DIVYANSH, This is an expected behavior, not a bug specific to you. Since UiPath.System.Activities 25.4.2, “Run Agent” was permanently merged into the Run Job activity; searching for “Run Agent” now just inserts Run Job automatically. In the Input field, click Refresh arguments, the mapper often loads empty until you force a refresh of the process’s argument list. If it’s still blank, republish the agent and redeploy/upgrade the corresponding process in the Orchestrator folder. A sta…

I hope this helps.

Cheers!

[loginerror (Maciej Kuźmicz)]

Hi @SimeonWang

Please share your System activity package version and the Studio version as mentioned above.

@Prashanth_D

It looks like “Run Agent” was permanently replaced by Run Job activity

This is true, but we made it confusing to debug such an issue by conveniently automatically renaming the Run Job activity to Run Agent activity if you select an agent

So it could still be an issue with the Run Job activity.

Quick remark: the latest Studio and System packages have improvements/fixes in this area, so knowing these versions is crucial for further advise.

[SimeonWang]

Thank you everyone. I’m a beginner with UiPath and I’m using the web-based Automation Cloud version. I’m currently still in the debugging phase, so I haven’t published anything to Orchestrator yet.

I’m actually using the Run Job activity and selected the Agent I created, but it fails to map the input variables defined in the Agent’s Data Manager. I’m really confused because this exact setup was working fine last week.

I’ve tried the suggested workarounds, but I’ve hit a complete dead end—I can’t even retrieve the Agent’s output inside my RPA workflow, so I have no way of knowing if any of these methods are actually working.

“I’m using a Mac with web-based UiPath Cloud, and the installed UiPath Assistant version is 2026.0.197.”

[loginerror (Maciej Kuźmicz)]

Thank you @SimeonWang, this is very useful and will help us investigating the issue. I’ll report back.

EDIT.

Could you try this as a workaround. In Studio Web, go to the Dependencies (bottom left of the page):

And switch the System package version down to System 26.6.3

[loginerror (Maciej Kuźmicz)]

The above workaround to downgrade the System package is the correct one. We will release the System package 26.8.1 patch that will address this issue.

EDIT

We released the System 26.8.1 activity package, and promoted it on the community cloud ring. The issue should no longer reproduce there.