ERROR consistency check in recordset structure validation

Hi Experts,

I have SFTP to file scenario, txt  file to xml file. following is my source XML structure.

:20:field20

:25:field25

:28C:field28c

:60F:field60f

:61:field61

:86:field86

:61:field61

:86:field86

:61:field61

:86:field86

:62F:field62f

I will use the lines  :25:, :60f: and :62f:  in mapping for target file rest of them will be ignored. I Create a structure as below in MT

<MT>

    <25>

         key

         field1

    <60f>

         key

         field1

    <62f>

         key

         field1

It is giving error in RWB like "Cannot send message to module processor: com.sap.aii.af.lib.mp.module.ModuleException: Transform: failed to execute the transformation: com.sap.aii.af.sdk.xi.adapter.trans.TransformException: Error converting Message: 'java.lang.Exception: ERROR consistency check in recordset structure validation (line no. 11: missing structure(s) in last recordset'; nested exception caused by: java.lang.Exception: ERROR consistency check in recordset structure validation (line no. 11: missing structure(s) in last recordset"

I went through http://help.sap.com/saphelp_nw04/helpdata/en/24/4cad3baabd4737bab64d0201bc0c6c/content.htm 

,What should be structure for this scenario?

Thank you for your helps.

Bekir