Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

We've captured the moments from FabCon & SQLCon that everyone is talking about, and we are bringing them to the community, live and on-demand. Starts on April 14th. Register now

Reply
Anonymous
Not applicable

Error when using Text Analytics

Hi,

 

Was attempting to use text analytics function to extract key phrases from "Comments" column and it returns an error

= AIFunctions.PostProcess(Table.AddColumn(#"Added Custom1", "Extract key phrases", each #"Extract key phrases"([Comments], "en-us")), "Extract key phrases", "CognitiveServices.ExtractKeyPhrasestexttext") meta [FunctionBrowser="TextAnalytics"]

 Error:

Expression.Error: We cannot convert the value "[Function]" to type Function.
Details:
Value=[Function]
Type=[Type]

 

Was suspecting the nulls in comments field perhaps? or would it matter if there is alpha numeric in th field

 
 
4 REPLIES 4
Sangari10
New Member

Estoy teniendo ahorita un error parecido, cómo lo solucionaste ? 

 

v-juanli-msft
Community Support
Community Support

Hi @Anonymous 

I don't see "AIFunctions.PostProcess" in any Power Query References documents.

You could refer to the completed guide below:

https://docs.microsoft.com/en-us/azure/cognitive-services/text-analytics/tutorials/tutorial-power-bi-key-phrases

 

Best Regards

Maggie

Community Support Team _ Maggie Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Anonymous
Not applicable

Hi

 

Unfortunately i was really looking foward to using some osrt of text mining functionality to extract patterns of words from comments.

The text Analytics function is allowed for being a premium user I suppose.

 

This error appears even if the datatype is consistent on fields where no nulls. Is there anything else you can assist with?

 

Expression.Error: We cannot convert the value "[Function]" to type Function.
Details:
    Value=[Function]
    Type=[Type]

Hi @Anonymous 

You could show your detailed needs, we may solve it by other ways.

 

Best Regards

Maggie

Helpful resources

Announcements
New to Fabric survey Carousel

New to Fabric Survey

If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.

Join our Fabric User Panel

Join our Fabric User Panel

Share feedback directly with Fabric product managers, participate in targeted research studies and influence the Fabric roadmap.

March Power BI Update Carousel

Power BI Community Update - March 2026

Check out the March 2026 Power BI update to learn about new features.