Column validation on a non required field
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08-02-2021 - |
문제
I would like to have validation on a column that IF you type in the field you have to use 19 letters. But if you leave the field blank you can still save.
Right now I use this:
=IF(LEN([column 1])=19
해결책
Try using below formula:
=IF(ISBLANK([column 1]), true, IF(LEN([column 1])=19, true, false)
This will allow users to add either blank values or the text with length of exact 19 characters.
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