Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowJuly 28 - August 9 | Final Round of the Power BI Dataviz World Championships. This is your chance. Learn more
Can anyone please help as to how to resolve this error. The value is also a text which is showing error and also I have changed the data type of the column to text yet I am getting this data format error.
Solved! Go to Solution.
@smokeyjoe03 , but i need to keep that "Less than year" value in my column along with the numerical values . How can I go about it?
The column will have to remain as a string in that case, the "Change Type" operation operates on every value in the column so even just 1 value that isn't a number or NULL will cause the error.
As a workaround I suggest making two columns:
It would look something like this:
| YearsColumn (Number) | DisplayColumn (Text) |
| 0 | Less than a year |
| 1 | 1 |
| 5 | 5 |
What formula do you used?
It mention you are going to compare date and number which is impossible, instead of using number like 2, use #duration(2,0,0,0)
In the "Details" in the error it suggests the value you are trying to change to a number is the string "Less than a Year"
Anything in that column that isn't a numerical value will cause the error when converting it.
@smokeyjoe03 , but i need to keep that "Less than year" value in my column along with the numerical values . How can I go about it?
The column will have to remain as a string in that case, the "Change Type" operation operates on every value in the column so even just 1 value that isn't a number or NULL will cause the error.
As a workaround I suggest making two columns:
It would look something like this:
| YearsColumn (Number) | DisplayColumn (Text) |
| 0 | Less than a year |
| 1 | 1 |
| 5 | 5 |
Join us in Barcelona for FabCon and SQLCon, the Fabric, Power BI, SQL, and AI community event. Save €200 with code FABCMTY200.
If you love stickers, then you will definitely want to check out our community sticker challenge, Barcelona edition!
Check out the July 2026 Power BI update to learn about new features.