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Anonymous's avatar
Anonymous
Not applicable
1 year ago
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Random Error Being Thrown

I am a relatively new Power BI user and was working with the data I was given for my internship. They have had me import their data from Snowflake and I began by manipulating the relationships. I did...
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  • Anonymous's avatar
    Anonymous
    1 year ago

    I am unsure of how I could of fixed on the model that was originally referenced in this question. What I did after experiencing this problem and not having any luck with the adivice I was given was try to use one of my compay's already existing datasets with similar data. This went well until I started getting thrown errors again, this time when I uploaded my data to Service. If you check my profile you'll see another post that occurred about a week after this one about this. So I followed the advice that was given in that post and deleted the data that was originally in the data set so that I could switch to Import storage and the reupload the data that had to be deleted. I wasn't too sure whther this would work since the date data table and many others that were giving me problems from when I posted this post would have to uploaded again, but it did. I know this likely won't help many situations, but if you're in a similar situation don't be afraid to save what you have and work on a copy of your work or restart and try different storage modes to see if your issue persists. Also, don't be afraid to post on here often. Everyone is so hknowledgable, helpful, and willing to look your way.

burakkaragoz's avatar
burakkaragoz
Super User
1 year ago

Hi Anonymous ,

 

Thanks for sharing the detailed error and context. These kinds of random errors in Power BI, especially when working with large or complex datasets, can be tricky to diagnose. Here are some steps and suggestions to help you narrow down and potentially resolve the issue:

  1. Check for Data Type and Relationship Mismatches:
    The error message references evaluation and relationship issues. Double-check that all your relationships are correctly defined and that data types match between related columns (for example, no text-to-number mismatches).

  2. Look for Duplicate or Ambiguous Relationships:
    If the same column is used in multiple relationships, or there are inactive/ambiguous relationships, Power BI can throw odd errors. Try deactivating non-essential relationships and test again.

  3. Update Power BI and Data Sources:
    Make sure you are using the latest version of Power BI Desktop and that all data connectors/drivers are up to date.

  4. Clear Cache and Re-import:
    Sometimes, Power BI’s cache gets corrupted. Try clearing the cache (File > Options and settings > Options > Data Load > Clear cache) and reload your data.

  5. Simplify the Model:
    If possible, temporarily remove some tables or relationships and see if the issue persists. This can help isolate the problematic area.

  6. Check for Special Characters or Unusual Data:
    Sometimes, hidden characters or extremely large/complex values in the data can cause evaluation errors. Look for any such anomalies in your source data.

  7. Review Applied Steps:
    Go through your Power Query “Applied Steps” one by one to see if a particular transformation is causing the error.

  8. Look for Known Issues:
    Occasionally, new Power BI updates introduce bugs. Check the official Power BI community or support page for any known issues matching your error.

If you can share more about your data model structure or the specific steps that lead to the error, I can help with more targeted advice.

Let me know if any of these steps help or if the error message changes after troubleshooting.
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