Document prerequisite

Signed-off-by: Michal Čihař <michal@cihar.com>
2016-04-27 11:28:29 +02:00 · 2016-04-27 11:28:29 +02:00 · d14d14b52f
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 Transformations
 ===============

+.. note:: 
+
+    You need to have configured the :ref:`linked-tables` for using transformations
+    feature.
+
 .. _transformationsintro:

 Introduction