IF Formula working on some and not on other items in column

Hi All,

I have a formula running in a column to validate an action based on whether it was done prior to 01/01/2011 or not.

=IF([Install Date]@row >= 1 / 1 / 11, "Yes", "No")

The formula works as required on rows where there is a year only, but throws #INVALID OPERATION where a date has been entered through smartsheets date selector.

Any thoughts?

Thank you!

Kirsten😊

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Accepted answers

LeelaLodhi03

Hi,

The issue is coming from how the date is written in your formula.

1 / 1 / 11 is being interpreted as a math calculation, not a date. That’s why it seems to work with 2026 (treated as a number) but fails with actual dates selected from the date picker, resulting in #INVALID OPERATION.

You may want to update your formula to use the DATE function:

=IF([Install Date]@row >= DATE(2011, 1, 1), "Yes", "No")

All comments

LeelaLodhi03

Hi,

The issue is coming from how the date is written in your formula.

You may want to update your formula to use the DATE function:

=IF([Install Date]@row >= DATE(2011, 1, 1), "Yes", "No")

LeelaLodhi03

KNorton

Thank you! Could kick myself it's so obvious! 😄

LeelaLodhi03

Glad that helped

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