For example, in a document a particular field’s value be null or string.

Thanks,
For example, in a document a particular field’s value be null or string.

Thanks,
Here the the field is defined in the Taxonomy. While extracting the data if the filed is empty, it is identified as missing filed. That’s the problem. In the Taxonomy is it possible to define a rule which says, a particular filed can be null or can hold any value…
Thanks