diff --git a/DataFiles/languages.txt b/DataFiles/languages.txt
index 80665742..a8a24ed2 100644
--- a/DataFiles/languages.txt
+++ b/DataFiles/languages.txt
@@ -4,18 +4,18 @@ external id;language code;language name;language name native;language code 2;fal
 3;pl-PL;Polish;Polski;pl;
 4;lv-LV;Latvian;Latviešu;lv;
 6;en-NZ;English (NZ);NZ English;;en,en-US,en-GB
-7;sr-SP;Serbian;српски језик;sr;
+7;sr-RS;Serbian;српски језик;sr;
 8;zh-CN;Chinese;中文;zh;
 9;it-IT;Italian;Italiano;it;
-10;ru-RU;Russian;Русско;ru;
+10;ru-RU;Russian;Русский;ru;
 11;vi-VN;Vietnamese;Tiếng Việt;vi;
 12;bg-BG;Bulgarian;български език;bg;
-13;kr-KR;Korean;한국어;kr;
+13;ko-KR;Korean;한국어;kr;
 14;ar-SA;Arabic;العربي;ar;
 15;el-GR;Greek;ελληνικά;el;
 16;es-ES;Spanish;Español;es;
 17;de-AT;German;Deutsch, Österreich;;de-DE
-18;mn-MN;Mongolean;Монгол хэл;mn;
+18;mn-MN;Mongolian;Монгол хэл;mn;
 19;en-GB;English;British English;en-UK;en,en-US
 20;en-CA;English (CA);Canadian English;;en,en-US,en-GB
 21;lt-LT;Lithuanian;Lietuvos;lt;
@@ -25,7 +25,7 @@ external id;language code;language name;language name native;language code 2;fal
 25;cs-CZ;Czech;čeština;cs;
 26;nb-NO;Norwegian (Bokmål);Norsk Bokmål;;no-NO
 28;nn-NO;Norwegian (Nynorsk);Norsk Nynorsk;;no-NO
-29;en;English;International English;;en-US,en-GB
+29;EN;English;International English;;en-US,en-GB
 30;de-DE;German;Deutsch, Deutschland;de;
 31;nl-NL;Dutch;Nederlands;nl;
 32;fr-FR;French;Français;fr;
@@ -37,4 +37,88 @@ external id;language code;language name;language name native;language code 2;fal
 38;no-NO;Norwegian;Norsk;no;
 39;pt-PT;Portuguese;Português;pt;
 40;nl-BE;Dutch (BE);Belgian Dutch;;nl-NL
-41;fr-BE;French (BE);Belgian French;;fr-FR
\ No newline at end of file
+41;fr-BE;French (BE);Belgian French;;fr-FR
+42;tr-TR;Turkish;Türkçe;tr;
+43;uk-UA;Ukrainian;Українська;uk;
+44;hu-HU;Hungarian;Magyar;hu;
+45;ro-RO;Romanian;Română;ro;
+46;sk-SK;Slovak;Slovenčina;sk;
+47;sl-SI;Slovenian;Slovenščina;sl;
+48;hr-HR;Croatian;Hrvatski;hr;
+49;bs-BA;Bosnian;Bosanski;bs;
+50;sq-AL;Albanian;Shqip;sq;
+51;he-IL;Hebrew;עברית;he;
+52;hi-IN;Hindi;हिन्दी;hi;
+53;th-TH;Thai;ไทย;th;
+54;ms-MY;Malay;Bahasa Melayu;ms;
+55;id-ID;Indonesian;Bahasa Indonesia;id;
+56;ta-IN;Tamil;தமிழ்;ta;
+57;bn-BD;Bengali;বাংলা;bn;
+58;pa-IN;Punjabi;ਪੰਜਾਬੀ;pa;
+59;gu-IN;Gujarati;ગુજરાતી;gu;
+60;mr-IN;Marathi;मराठी;mr;
+61;ur-PK;Urdu;اردو;ur;
+62;si-LK;Sinhala;සිංහල;si;
+63;ne-NP;Nepali;नेपाली;ne;
+64;km-KH;Khmer;ខ្មែរ;km;
+65;lo-LA;Lao;ລາວ;lo;
+66;my-MM;Burmese;ဗမာစာ;my;
+67;ka-GE;Georgian;ქართული;ka;
+68;hy-AM;Armenian;Հայերեն;hy;
+69;az-AZ;Azerbaijani;Azərbaycan dili;az;
+70;kk-KZ;Kazakh;Қазақ;kk;
+71;uz-UZ;Uzbek;Oʻzbek;uz;
+72;tg-TJ;Tajik;Тоҷикӣ;tg;
+73;tk-TM;Turkmen;Türkmen;tk;
+74;ps-AF;Pashto;پښتو;ps;
+75;dv-MV;Dhivehi;ދިވެހި;dv;
+76;sw-KE;Swahili;Kiswahili;sw;
+77;am-ET;Amharic;አማርኛ;am;
+78;af-ZA;Afrikaans;Afrikaans;af;
+79;xh-ZA;Xhosa;isiXhosa;xh;
+80;zu-ZA;Zulu;isiZulu;zu;
+81;st-ZA;Southern Sotho;Sesotho;st;
+82;sn-ZW;Shona;chiShona;sn;
+83;ny-MW;Chichewa;Chichewa;ny;
+84;rw-RW;Kinyarwanda;Kinyarwanda;rw;
+85;ha-NG;Hausa;Hausa;ha;
+86;ig-NG;Igbo;Igbo;ig;
+87;yo-NG;Yoruba;Yorùbá;yo;
+88;so-SO;Somali;Soomaali;so;
+89;ti-ER;Tigrinya;ትግርኛ;ti;
+90;mn-Cyrl-MN;Mongolian (Cyrillic);Монгол;mn-Cyrl;
+91;mn-Mong-CN;Mongolian (Traditional);ᠮᠣᠩᠭᠣᠯ;mn-Mong;
+92;cy-GB;Welsh;Cymraeg;cy;
+93;ga-IE;Irish;Gaeilge;ga;
+94;mt-MT;Maltese;Malti;mt;
+95;is-IS;Icelandic;Íslenska;is;
+96;fo-FO;Faroese;Føroyskt;fo;
+97;gl-ES;Galician;Galego;gl;
+98;eu-ES;Basque;Euskara;eu;
+99;ca-ES;Catalan;Català;ca;
+100;br-FR;Breton;Brezhoneg;br;
+101;lb-LU;Luxembourgish;Lëtzebuergesch;lb;
+102;mk-MK;Macedonian;Македонски;mk;
+103;kkj-CM;Kako;Kako;kkj;
+104;ln-CD;Lingala;Lingála;ln;
+105;lg-UG;Ganda;Luganda;lg;
+106;ak-GH;Akan;Akan;ak;
+107;om-ET;Oromo;Afaan Oromoo;om;
+108;ss-SZ;Swati;SiSwati;ss;
+109;ts-ZA;Tsonga;Xitsonga;ts;
+110;tn-ZA;Tswana;Setswana;tn;
+111;ve-ZA;Venda;Tshivenda;ve;
+112;nr-ZA;South Ndebele;isiNdebele;nr;
+113;qu-PE;Quechua;Runa Simi;qu;
+114;ay-BO;Aymara;Aymar aru;ay;
+115;gn-PY;Guarani;Avañe'ẽ;gn;
+116;mo-MD;Moldovan;Moldovenească;mo;
+117;ky-KG;Kyrgyz;Кыргызча;ky;
+118;be-BY;Belarusian;Беларуская;be;
+119;tt-RU;Tatar;Татар теле;tt;
+120;ba-RU;Bashkir;Башҡорт;ba;
+121;os-RU;Ossetian;Ирон;os;
+122;cv-RU;Chuvash;Чӑваш;cv;
+123;sa-IN;Sanskrit;संस्कृतम्;sa;
+124;bo-CN;Tibetan;བོད་ཡིག;bo;
+125;ug-CN;Uyghur;ئۇيغۇرچە;ug;
diff --git a/Model/Import Model/spreadsheet-import/Excel2bSDD_converter.py b/Model/Import Model/spreadsheet-import/Excel2bSDD_converter.py
index 5ffb567c..eb5bfd3f 100644
--- a/Model/Import Model/spreadsheet-import/Excel2bSDD_converter.py	
+++ b/Model/Import Model/spreadsheet-import/Excel2bSDD_converter.py	
@@ -156,7 +156,9 @@ def excel2bsdd(excel, bsdd_template):
                 found_it = True
                 break
         if not found_it:
-            raise Exception(f"Class '{related}' not found in the spreadsheet, so couldn't append the class property: '{cls_prop}'!")
+            print(related)
+            print(cls_prop['PropertyCode'])
+            raise Exception(f"Class '{related}' not found in the spreadsheet, so couldn't append the class property: '{cls_prop['PropertyCode']}'!")
     # process ClassRelation
     cls_rels = map_data(excel['classrelation'], bsdd_template['Classes'][0]['ClassRelations'], "class-relations")
     for cls_rel in cls_rels:
diff --git a/Model/Import Model/spreadsheet-import/Excel2bSDD_template.xlsx b/Model/Import Model/spreadsheet-import/Excel2bSDD_template.xlsx
index 2f6c325c..99f0b52c 100644
Binary files a/Model/Import Model/spreadsheet-import/Excel2bSDD_template.xlsx and b/Model/Import Model/spreadsheet-import/Excel2bSDD_template.xlsx differ