Matchcodes are used to access customer accounts without specifying the account number. If you, for example, do not know the account number, you can search for the account via other specifications, such as the name or the city. When defining matchcodes, you specify which fields of a master record can be used for the search.
Matchcodes are displayed from the master data tables via database indices that may be your own. These indices are automatically created during matchcode definition. Since some fields of the master record, such as name or account name support upper/lower case, substitutes in upper case have been included for matchcode queries.