It is an optional alphanumeric field of 1–16 characters, sent in tag 9F12 in EMV transactions.
It is information stored on the card and data returned in ReadCardData. It can be translated into Turkish as “tercih edilen uygulama adı” (preferred application name).
It is an optional data element that can provide an additional name to describe the card application identified in the AID (Application Identifier) field.
For the same Application Label corresponding to a trademark of a card association, different alphanumeric strings may be added depending on the preferred alphabet used by the card issuer in a given country.
Relationship with Application Label
The Preferred Name is the more understandable name the issuer wants to display instead of the Application Label. If the card has a Preferred Name and the terminal supports the relevant character set, the terminal displays it; otherwise it falls back to the Application Label.
This choice is made using the Issuer Code Table Index (9F11). With this field, the card indicates which character code table is used. If the terminal does not support that table, it must not display the Preferred Name.
This mechanism becomes important when Turkish characters need to be displayed correctly; if there is no support, the label may be shown with ASCII equivalents.
