Vacation Time Error VBA Code


New Member
Mar 22, 2017
Hello Everyone,

I currently have a worksheet that will populate days with the initials of the Staff that has been assigned a task that begins and ends in a certain time frame. I've used an IF function for this.

I now have another task I must do. My boss wants there to be an Error Message generated if the staff member is assigned a task during their vacation time.

Normally I would use data validation, but I don't think I can. I need help.

I'm trying to come up with a VB code that will check the begin date for the task against the begin date of the vacation, the end date of the task against the end date of the vacation, and then see if the staff member next to both the date frames matches - and if it does, given an error box message, and if not, then to just continue to follow the formulas entered.


TaskSheet1 =
Begin Task 5/10/17
End Task 5/21/17
Staff ML
Populates these dates with ML using =IF(AND(Dates>=Begin,Dates<=Deadline),Staff,"") 'populates the date fields listed with their initials

VacationSheet2 =
VABegin 5/18/17
VAEnd 5/22/17
Staff ML
Need a VB Code to check and if true, Generate "ERROR: ML is on Vacation 5/10 - 5/21 please assign another staff member to this task."

If the dates do not over lap, then allow the assignment to continue..........
Any suggestions?
Last edited:

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