Join us at FabCon Atlanta from March 16 - 20, 2026, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.
Register now!The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more
Hi dudes,
I have a table reading from a .csv file. There is no wrong, missing or unusual characters in the records. Whenever I refresh in Power Bi, I get this message and it only occurs when I unpivot the two of the columns. Before unpivoting, it sounds like working well. Any assistance?
OLE DB or ODBC error: [DataFormat.Error] We couldn't convert to Number
when I follow, I see this:
DataFormat.Error: We couldn't convert to Number.
Details:
TIME (-3602)
Solved! Go to Solution.
You may check the related steps Table.TransformColumnTypes in The Advanced Editor.
Do you have a "Changed Type" step after unpivoting? Remove it.
You may check the related steps Table.TransformColumnTypes in The Advanced Editor.
Check out the November 2025 Power BI update to learn about new features.
Advance your Data & AI career with 50 days of live learning, contests, hands-on challenges, study groups & certifications and more!