ervation per individal/period, and the value of <code>.var</code> is identical for all of them, that's no problem. But what should <code>panel_locf()</code> do if they're not identical? Set <code>.resolve = 'error'</code> (or, really, any string) to throw an error in this circumstance. Or, set <code>.resolve</code> to a function that can be used within <code><a href='https://dplyr.tidyverse.org/reference/summarise.html'>dplyr::summarize()</a></code> to select a single value per individual/period. For exampl