In XML Pub Excel Reports excel removes the leading Zeros and prints the whole number. There are many instances where we need to print the zeros for eg item numbers starting with 0.
There are many ways to achieve this, one of the simple ways is to convert the number to character by adding space at the end.
concatenate two spaces after the xml tag as shown below in your template.
Downside of it is you will not be able to use excel features like sum , count etc on this specific column.