Common Errors, Exception and Problem in SAP XI

During designing and execution of any Integration Scenario we always encounter some sort of Error, It can be small like "during activation of Data Type if we forget to assigned the Type (String, int, Time, Date etc), it will throw an Error during activation- Type is not assigned or it can be large like after Processing of interface no data is in target systems;

Like for JDBC to File scenario: If in JDBC sender communication channel I am overriding Document Name (default is resultset) with the Message Type name (say MT_JDBC_Sender) and skipping the Document Namespace my inteface run successfully but I will not get the correct file at the receiver side, as it will not generate the elements and tags even my mapping program is correct.

These are just example of common mistakes during design time, there can be many more and we come across it once we execute the interface and spend some time to trouble shoot it:-)So, finally I am come up with this page where we can shares problems that are very common in XI/PI. I try my best to categorize the Error type and its solution depends on the individual component of XI 3.0 or PI 7.0 (Soon for PI 7.1). I know there is similar to this on https://www.sdn.sap.com/irj/sdn/nw-xi XI/PI FAQ by Michal, But that is more specific to "How to *" and other some other FAQ's. But is only dedicated to the Common and General type of errors in XI. 

Problem during Designing(IR):

Problem during Configuration(ID):

Problem during Runtime Workbench:

SAP Web Application Server Problem Analysis Scenarios link: http://help.sap.com/saphelp_nw04/helpdata/en/c6/de34417f222004e10000000a155106/frameset.htm

Time to Time I will update this based or common problem/Error/Exception in XI. 

Thanks & Regards,

Farooq Farooqui.