ContributionsMost RecentMost LikesSolutionsRe: Date Formula - IF Statement ErrorWhen i add If(IsNull([Lead Time +Transit Time (Weeks)]),null, to the beginning of my If Statement, it is now only populating the field based on this part (If(IsNull([PO Issue Date]), WeekdayAdd([PO Issue Date], [Lead Time +Transit Time (Weeks)]*7), ) of the if statement and isn't for the 2nd part. I believe it is missing something after , null, but i do not know what to add without getting an error Date Formula - IF Statement Error I have a date- formula field with the below working if statement: If(IsNull([PO Issue Date]) = false, WeekdayAdd([PO Issue Date], [Lead Time +Transit Time (Weeks)]*7), WeekdayAdd([Plan Issue PO Date], [Lead Time +Transit Time (Weeks)]*7))) I want to add in an initial if statement for If [Lead Time +Transit Time (Weeks)] is null, then show either 0, 1/1/1900, or " " in the field but keep getting an error.