Hi Spies
Unfortunately the hex code comes from the transponder of the aircraft and in this case the transponder is wrongly coded. Nothing we can do about it, it will require the airline to have the transponder recoded correctly
855188 (decimal) decodes to 0D0C94 octal and it is in the database as such awaiting them correcting the transponder, however it was delivered out of TLS on delivery as VIV001 using 885188 on 1st August 2020 so i wouldnt hold your breath
Alan