diff --git a/bt5/erp5_banking_core/SkinTemplateItem/portal_skins/erp5_banking_core/CashDetail_saveFastInputLine.xml b/bt5/erp5_banking_core/SkinTemplateItem/portal_skins/erp5_banking_core/CashDetail_saveFastInputLine.xml
index cb1a024cbfc6459a3a1c46af5fe40ab0720f209c..e027b6a4acb902923a4138c4937eb998b5cd1f96 100644
--- a/bt5/erp5_banking_core/SkinTemplateItem/portal_skins/erp5_banking_core/CashDetail_saveFastInputLine.xml
+++ b/bt5/erp5_banking_core/SkinTemplateItem/portal_skins/erp5_banking_core/CashDetail_saveFastInputLine.xml
@@ -196,7 +196,7 @@ for resource_id in per_resource_dict.keys():\n
         variation_not_defined = 1\n
         break\n
     # for the letter, if coin, must always be not_defined\n
-    if letter != \'emission_letter/not_defined\' and letter.replace(\'emission_letter/\',\'\') not in resource_object.getEmissionLetterList():\n
+    if letter != \'emission_letter/not_defined\' and letter.replace(\'emission_letter/\',\'\') not in resource_object.getEmissionLetterList()+[\'mixed\']:\n
       old_letter = letter\n
       letter = \'emission_letter/not_defined\'\n
       # replace key in per_resource_dict\n
diff --git a/bt5/erp5_banking_core/bt/revision b/bt5/erp5_banking_core/bt/revision
index c6876402f55fcc4178060d4f0b5d16a8e23a5c96..4e66132b50032ef4b80cd41c36efeb2353360c8c 100644
--- a/bt5/erp5_banking_core/bt/revision
+++ b/bt5/erp5_banking_core/bt/revision
@@ -1 +1 @@
-278
\ No newline at end of file
+282
\ No newline at end of file