Some numeric-looking Excel fields represent identifiers rather than quantities. Converting them to text can help with substring searches or consistent matching, particularly when leading zeros are meaningful. The Ablebits guide discusses several methods, including TEXT and conversion tools.

Illustrative image
Illustrative image.

Distinguish the stored value from a custom display format. A number shown with a leading zero is not necessarily the same text as an identifier containing that zero. Review a few representative records before converting the column, and keep true amounts numeric when they still need to participate in arithmetic calculations.