Wid Code Anninc992i -

Researchers use these codes to extract precise data points from the WID Statistics Interface or via the widr R package . For instance, a full data query would combine this code with a percentile (e.g., p0p50 for the bottom 50%) and a country code (e.g., US for the United States) to see how the average income of an average American adult has changed over time. a Concept nninc Net National Income Age Group 992 Adults (20+) Unit i Individuals

It’s possible this is:

In plain terms, retrieves the Average Net National Income for the adult population (20+) calculated as individuals . wid code anninc992i

If you’re certain about the term, here’s a general approach to dealing with unknown codes: Researchers use these codes to extract precise data