ALWNULL (Allow Null Value) Keyword--Physical Files Only

Use this field-level keyword to define this field to allow the null value.

This keyword has no parameters.

When you specify the ALWNULL keyword, the maximum length you can specify in positions 30 to 34 is 32 765 bytes (32 739 if the field is also variable length).

For physical files, when you specify the DATFMT keyword with values of *JOB, *MDY, *DMY, *YMD, or *JUL and the field allows null value, you must specify a valid date on the DFT keyword for this field.