Forum Discussion

RZ's avatar
RZ
Frequent Visitor
3 years ago

Unexpected behaviour in Power Query

Hello,

 

I have a Power BI report that connects to variouys data sources (files, API)  and brings them together. I made some changes yesterday, And I started getting dataformat.error's during refresh. The error is not  associated with one row. Instead the whole step fails. After some backward steps to identify the issue , now I am at a stage where I am getting the error

 

 

DataFormat.Error: We couldn't convert to Number.
Details:
    True

 

 

at the sorting step where I was hoping to find some problematic data... 

 

 

The immediate step before refreshes fine. It s the step where I converted the values to text in order to debug if something was wrong with the data I have,,,

 

 

Any suggestions? 

 

Thanks...

Ruchan 

 

Need Help

3 Replies

  • RZ's avatar
    RZ
    Frequent Visitor
    3 years ago

    Well it turned out to be one of the export files had missing columns, so some columns had mismatching type of data which was failing a group by step. I am not sure that expains Power BI behaviour though...

  • lbendlin's avatar
    lbendlin
    Super User
    3 years ago

    That is indeed weird.  Can you provide sample data in usable format (not as a screenshot) ?

  • RZ's avatar
    RZ
    Frequent Visitor
    3 years ago

    I will now start to remove data sources one by one and see what happens. I  was expecting a magic solution like "OK the cached data must have been corrupt..   Click ctrl-alt-shift refresh and see if that solves it..."