From Left and From Right Settings

This property indicates the number of characters from left and right that will remain in the clear and hence be excluded from tokenization. Not all token types will allow the end-user to specify these values. The From Left and From Right settings can be configured in the Tokenize Options during the Data Element creation on the ESA Web UI.

For example;
Input Value: 5511309239934975
Credit Card Token: Left=0 Right=4
Output Value: 8278278929904975

When processing input data, you must check the From Left and From Right settings. Validate the input data based on the From Left and From Right settings before applying the Allow Short Data settings.

For more information about how From Left and From Right settings work together with short data settings, refer to Calculating Token Length.