1:2 Message Mapping WithOut BPM - Split mapping created no messages Error

Question

Hi,
I am a new-bie to SAP PI and am trying out the following scenario without BPM.
Make multiple files based on Age received from input file.Input File contains Name,DOB and Output File contains Name, Age.
I want to create 2 files, one containing details of people with Age <21 and the other output file containing details of people with Age >= 21.
To acheive this,
In IR, I created 2 DT and 3 MT,1 MM with 2 Target MT,both having occurences 0..unbounded, 1 IM with 2 Target MI,both having occurences 0..unbounded
And in ID, 1 Sender Agreement, 2 Receiver Agreement, 1 Receiver Determination, 1 Interface Determination using Enhanced Interface Determination.
When i run this scenario, I am getting the following error "Split mapping created no messages"
Please let me know how can I resolve it.

Answer 1

Oops, I did not know that.
Thanks for that information. uhuuuuuuuuuuu, atlast the message is processed and I am seeing output files created.
But, there is still one problem. My output files are created with just the following content
<?xml version="1.0" encoding="utf-8" ?>
  <ns1:MT_2OP_File_Out xmlns:ns1="http://POC_Sec1_1IP2OP2" />
In MM, I see the output message as follows:
Message
     Message1
         MT_2OP_File_Out
              Employee
                  Name
                  Age
     Message2
         MT_2OP_File_Out1
              Employee1
                  Name
                  Age
The mapping done:
MT_2OP_File_Out and MT_2OP_File_Out with the Message Type element on source end.
Employee and Employee1 are mapped as
     Age -> removeContext -> SplitByValue[Each Value] < 21, Map Employee
     Age -> removeContext -> SplitByValue[Each Value] >= 21, Map Employee1 resp
The fields are straight maps.
Is there any basic mapping error that I am making. Please help.