isl_Armn2Latn_BGN_1981 should have been arm_Armn2Latn_BGN_1981. isl is the ISO 639 code for Icelandic. Armn is the Armenian script, presumably the language has to be Armenian.
Moreover arm_Armn2Latn_BGN_1981 also exist. The former is probably wrong and the latter is correct.
isl_Armn2Latn_BGN_1981
should have beenarm_Armn2Latn_BGN_1981
.isl
is the ISO 639 code for Icelandic.Armn
is the Armenian script, presumably the language has to be Armenian.Moreover
arm_Armn2Latn_BGN_1981
also exist. The former is probably wrong and the latter is correct.