Two different XIRR errors on the same dataset

Question

I attempted to calculated the XIRR from a dataset (please see the sample sheet linked below). However, on two occasions, the XIRR formula returns two different errors:

1. "XIRR attempted to compute the internal rate of return for a series of cash flows, but it was not able to."

2. "Function XIRR parameter 1 expects number values. But '' is a text and cannot be coerced to a number."

The errors can be found on the two respective tabs. I've checked that all $ values in the dataset are numbers and all dates are dates. Any insights into how to get the XIRR to calculate correctly is appreciated. Thank you!

XIRR Errors

Answer 1

You have blank dates in Cells B557, B593 [tab_Error 2], which I now filled with some random dates (enter valid dates OR consider disregarding them from formula calculation) as XIRR needs valid dates alongside the cashflow amounts in Column_A. its no longer throwing an error

Answer 2

As a solution, you need to use commas instead of periods in number values. Example : -5237.63 this is wrong -5237,63 this is true