Frequent-Error-Messages.md

@@ -6,7 +6,7 @@ You try to insert data in a table and the identifier of one or many rows already
 Either somebody has already imported the same data set or somebody has at least used the same value in the identifier column.
 
 ## Solution
-Check the already existing data in the database for that table. If your data were already imported, either you are happy with them or you need to contact the user who imported the data. Who this is can be found in the column _created_by _ . 
+Check the already existing data in the database for that table. If your data were already imported, either you are happy with them or you need to contact the user who imported the data. Who this is can be found in the column _created_by_ . 
 
 If you by chance build the same identifier for different data, consider to make your identifier more specific, e.g. by adding the country abbreviation as a prefix.