diff --git a/src/game/Spell.cpp b/src/game/Spell.cpp
index b3792299c..a729845a6 100644
--- a/src/game/Spell.cpp
+++ b/src/game/Spell.cpp
@@ -3645,12 +3645,12 @@ void Spell::SendCastResult(Player* caster, SpellEntry const* spellInfo, uint8 ca
     switch (result)
     {
         case SPELL_FAILED_NOT_READY:
-            data << uint32(0);                              // unknown, value 1 seen for 14177
+            data << uint32(0);                              // unknown, value 1 seen for 14177 (update cooldowns on client flag)
             break;
         case SPELL_FAILED_REQUIRES_SPELL_FOCUS:
-            data << uint32(spellInfo->RequiresSpellFocus);
+            data << uint32(spellInfo->RequiresSpellFocus);  // SpellFocusObject.dbc id
             break;
-        case SPELL_FAILED_REQUIRES_AREA:
+        case SPELL_FAILED_REQUIRES_AREA:                    // AreaTable.dbc id
             // hardcode areas limitation case
             switch(spellInfo->Id)
             {
@@ -3673,26 +3673,44 @@ void Spell::SendCastResult(Player* caster, SpellEntry const* spellInfo, uint8 ca
         case SPELL_FAILED_TOTEMS:
             for(int i = 0; i < MAX_SPELL_TOTEMS; ++i)
                 if(spellInfo->Totem[i])
-                    data << uint32(spellInfo->Totem[i]);
+                    data << uint32(spellInfo->Totem[i]);    // client needs only one id, not 2...
             break;
         case SPELL_FAILED_TOTEM_CATEGORY:
             for(int i = 0; i < MAX_SPELL_TOTEM_CATEGORIES; ++i)
                 if(spellInfo->TotemCategory[i])
-                    data << uint32(spellInfo->TotemCategory[i]);
+                    data << uint32(spellInfo->TotemCategory[i]);// client needs only one id, not 2...
             break;
         case SPELL_FAILED_EQUIPPED_ITEM_CLASS:
-            data << uint32(spellInfo->EquippedItemClass);
-            data << uint32(spellInfo->EquippedItemSubClassMask);
-            //data << uint32(spellInfo->EquippedItemInventoryTypeMask);
-            break;
         case SPELL_FAILED_EQUIPPED_ITEM_CLASS_MAINHAND:
         case SPELL_FAILED_EQUIPPED_ITEM_CLASS_OFFHAND:
-            // same data as SPELL_FAILED_EQUIPPED_ITEM_CLASS ?
-            data << uint32(0);
-            data << uint32(0);
+            data << uint32(spellInfo->EquippedItemClass);
+            data << uint32(spellInfo->EquippedItemSubClassMask);
             break;
         case SPELL_FAILED_PREVENTED_BY_MECHANIC:
-            data << uint32(0);                              // unknown, mechanic mask?
+            data << uint32(0);                              // SpellMechanic.dbc id
+            break;
+        case SPELL_FAILED_CUSTOM_ERROR:
+            data << uint32(0);                              // custom error id (see enum SpellCastResultCustom)
+            break;
+        case SPELL_FAILED_NEED_EXOTIC_AMMO:
+            data << uint32(spellInfo->EquippedItemSubClassMask);// seems correct...
+            break;
+        case SPELL_FAILED_REAGENTS:
+            data << uint32(0);                              // item id
+            break;
+        case SPELL_FAILED_NEED_MORE_ITEMS:
+            data << uint32(0);                              // item id
+            data << uint32(0);                              // item count?
+            break;
+        case SPELL_FAILED_MIN_SKILL:
+            data << uint32(0);                              // SkillLine.dbc id
+            data << uint32(0);                              // required skill value
+            break;
+        case SPELL_FAILED_TOO_MANY_OF_ITEM:
+            data << uint32(0);                              // ItemLimitCategory.dbc id
+            break;
+        case SPELL_FAILED_FISHING_TOO_LOW:
+            data << uint32(0);                              // required fishing skill
             break;
         default:
             break;