diff --git a/superfaktura/enumerations/data_format.py b/superfaktura/enumerations/data_format.py
new file mode 100644
index 0000000..3ba06b3
--- /dev/null
+++ b/superfaktura/enumerations/data_format.py
@@ -0,0 +1,6 @@
+import enum
+
+
+class DataFormat(enum.Enum):
+    JSON = enum.auto()
+    PDF = enum.auto()
diff --git a/superfaktura/enumerations/language.py b/superfaktura/enumerations/language.py
new file mode 100644
index 0000000..f3472c8
--- /dev/null
+++ b/superfaktura/enumerations/language.py
@@ -0,0 +1,15 @@
+class Language:
+    Czech = "cze"
+    German = "deu"
+    English = "eng"
+    Croatian = "hrv"
+    Hungarian = "hun"
+    Italian = "ita"
+    Dutch = "nld"
+    Polish = "pol"
+    Romanian = "rom"
+    Russian = "rus"
+    Slovak = "slo"
+    Slovene = "slv"
+    Spanish = "spa"
+    Ukrainian = "ukr"