Manual.rst: Procedure to find an irreproducible error

Documentation/Manual.rst

@@ -8672,6 +8672,32 @@ Tips:
   * Always check the Javascript console of your browser, see `javascriptProblem`_.
   * Always check the Webserver log files.
 
+Procedure to Find an Irreproducible Error
+-----------------------------------------
+
+* Find out the date and time on which the error occurred as precisely as possible
+* Find out the user-name of the person who experienced the error
+* Search the logs at the time of the Error:
+
+  * qfq.log
+
+    * location: fileadmin/protected/log/qfq.log
+    * Look for error messages which were sent to the user at that time. (search for user-name in file)
+    * Look at actions performed during the time of Error
+
+  * FormSubmitLog
+
+    * location: table named 'FormSubmitLog' in the qfq database
+    * In the SQL Table FormSubmitLog search the column FEUser for the user-name
+    * does the data (in the column formData) submitted at the time of the error coincide with the data saved in the database?
+
+  * sql.log
+
+    * location: fileadmin/protected/log/sql.og
+    * search for the form that was active when the error occurred:
+
+      * e.g.: If the form is named 'requestGreview' search for 'form:requestGreview'
+
 Caching
 -------