DATE DATA VALIDATION
Coumn A has dates and blank cells.
Coumn B has dates. Is it possible to specify that a date entered into column A must be later than a date in Column B? A problem arises when a cell in column A is blank, because excel reads this as 0 and therefore ANY date in the corresponding cell in column B is going to be perceived by excel as later and therefore not valid. So, in other words, what I want is a to specify that if there is a date in column A AND a date in column B, excel will accept only a date in column B later than the date in column A. But if column A is blank, then Column B will accept any date. Thanks for assistance. -- William |
DATE DATA VALIDATION
In Data- Validation
Select custom enter this formula (starting in row 1 or change the 1 to whatever row you want to start with): =IF(ISBLANK($A1),TRUE,IF($B1$A1,TRUE,FALSE)) uncheck ignore blank. hit ok On Aug 8, 8:53*am, William wrote: Coumn A has dates and blank cells. Coumn B has dates. Is it possible to specify that a date entered into column A must be later than a date in Column B? *A problem arises when a cell in column A is blank, because excel reads this as 0 and therefore ANY date in the corresponding cell in column B is going to be perceived by excel as later and therefore not valid. *So, in other words, what I want is a to specify that if there is a date in column A AND a date in column B, excel will accept only a date in column B later than the date in column A. *But if column A is blank, then Column B will accept any date. Thanks for assistance. -- William |
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