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Don't understand it - Invalid Formula. Expected a value compatible with 'DataSource'

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Posted on by Community Power Pla... Microsoft Employee

Hello everyone,

 

I try to do a demo to write back to the SQL Server source with PowerApp in a Power BI Report. Actually it's exactly like in this example:
https://www.youtube.com/watch?v=LxuRzj0X348

 

I try to do it with AdventureWorksDW2017 and the table FactSalesQuota. In Power BI I pass through the following fields from the table FactSalesQuota:

PowerApp1.png

 

In PowerApp I did a gallery (shows the Power BI values) and added an edit field (connected to the SQL Server datasource FactSalesQuota). There I tried to make a connection to the gallery by putting as item myGallery.Selected

 

PowerApp2.png

 

But I always get the error message "Invalid Formula. Expected a value compatible with 'DataSource'". Yes, I searched the forum and I didn't understand it at all.

 

How do I pass the right fields to the PowerApp that it can display the selected values? I appreciate any help

Categories:
Building Power Apps
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  • Verified answer
    v-siky-msft Profile Picture
    v-siky-msft Microsoft Employee on at

    Hi @Anonymous ，

     

    I have made a test on my side, and also have the same issue.

    The cause of issue is that date column is divided into Day, Month, Quarter, Year columns. However the Original SQL Data source is still data column. So the error show the items isn’t compatible with 'DataSource'.

     

    Annotation 2019-09-02 150244.png

    The work around is changing “Date Hierarchy (Defaults)” to “date” by right-clicking when you select Fields to PowerApps Data, so that the date column will not be divided.

    Then just keep the previous step, it will work fine.

    Annotation 2019-09-02 151633.png    Annotation 2019-09-02 151103.png

    Best regards,

    Sik

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