Power Platform Community Forum Thread Details

Hi everyone,

I’m integrating Copilot into a Power Apps Component Framework (PCF) control and triggering a topic via the executeEvent API, as described in the Microsoft documentation:

https://learn.microsoft.com/en-us/power-apps/developer/component-framework/reference/copilot/executeevent

I’m aware that this API is still in preview, but I wanted to check if anyone else has experienced this issue.

Everything works perfectly when I run it as an admin user — the topic is triggered successfully and returns a valid response.

However, when a normal user executes the exact same PCF control in the same sandbox environment, the Copilot API call fails with the following error:

{
"ErrorMessage": "Missing or invalid assignment for variable 'System.User.Language'.",
"ErrorCode": "MissingOrInvalidVariableAssignment"
}

Here’s what I’ve verified so far:

The same executeEvent call works fine for my admin account.
I tested multiple non-admin users (via impersonation) — they all have the same security role its not working for them
The environment is sandbox, not production.
I have installed the German language in the Copilot agent and even set the topic’s default language to German (de-DE).

It looks like the System.User.Language variable is missing or not initialized for the users when Copilot is called through the PCF executeEvent API, even though the language is installed and configured.

Is this a known limitation, or does it require specific privileges for System.User.Language to be resolved correctly?

Thanks a lot in advance for any help or insights!

Categories:

Topic creation & management

HI @CU29100930-0

Yes, this is a known issue, and in many cases the users must have Environment Maker. I do not know what role you gave them but try giving them environment maker.

Now that sucks I know, but your other option is to intentionally make this available IN the PCF control instead of relying on it being available, because unless they have the correct permission they will not.

You can essentially add this to your executeEvent call. Now whether you... hard code it... or you make it (so it can read it from somewhere), which will make it available to the user.

Sorry for your issue :-( others are having that issue as well.

If these suggestions help resolve your issue, Please consider Marking the answer as such and also maybe a like.

Thank you!
Sincerely, Michael Gernaey