{smcl} {* *! version 1.9.0 10jan2017}{...} {vieweralsosee "ftools" "help ftools"}{...} {vieweralsosee "[R] isid" "help isid"}{...} {viewerjumpto "Syntax" "fisid##syntax"}{...} {title:Title} {p2colset 5 14 20 2}{...} {p2col :{cmd:fisid} {hline 2}}Check for unique identifiers{p_end} {p2colreset}{...} {marker syntax}{...} {title:Syntax} {p 8 13 2} {cmd:fisid} {varlist} {ifin} [{cmd:,} {opt m:issok}] {marker description}{...} {title:Description} {pstd} {opt fisid} is an alternative to {help isid} (which checks whether {it:varlist} uniquely identifies the observations.) {marker author}{...} {title:Author} {pstd}Sergio Correia{break} Board of Governors of the Federal Reserve System, USA{break} {browse "mailto:sergio.correia@gmail.com":sergio.correia@gmail.com}{break} {p_end} {marker project}{...} {title:More Information} {pstd}{break} To report bugs, contribute, ask for help, etc. please see the project URL in Github:{break} {browse "https://github.com/sergiocorreia/ftools"}{break} {p_end}