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Mask format

Configure a mask format to limit each character in the output field to an alphabetic, numeric, or alphanumeric character.

If you do not define a mask format, the

masking

task replaces each source character with any character. If the mask format is longer than the input string, the

masking

task ignores the extra characters in the mask format. If the mask format is shorter than the source string, the

masking

task does not mask the characters at the end of the source string.

When you configure mask a mask format, you must configure the source filter characters or target filter characters that you want to use the mask format with.

The following table describes mask format characters:

Character	Description
A	Alphabetical characters. For example, ASCII characters a to z and A to Z.
D	Digits. From 0 through 9.
N	Alphanumeric characters. For example, ASCII characters a to z, A to Z, and 0-9.
X	Any character. For example, alphanumeric or symbol.
+	No masking.
R	Remaining characters. R specifies that the remaining characters in the string can be any character type. R must appear as the last character of the mask.