Hi All,
I am struggling writing the formula for SharePoint calculated column.
I have 3 SharePoint Columns:
[Vaccination date];
[Infected] - Yes/No choice;
[No testing is not needed (date)]
In column [No testing is not needed (date)] I would like to calculate the date a person does not need to get tested, which means I would like to add 14 days to the [Vaccination date] if the person was infected.
I have been using the following formula:
=IF([Infected]="Yes";[Vaccination date]+14;"")
This formula seems to work only when both columns are not blank. If one of the columns is not, then I get the default date "1900-01-13".
Any suggestions?

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