Scenario Merge two files using BPM

Hi.

I have a scenario that try to merge two files.

We have implemented a BPM with a fork to receives both files, after that there is a transformation step to perform 2:1 mapping.

First source file:

DT_Fichero1

name

place

ID

Example:

If I test the MM without this tags the MM not run correctly and I think that this is my problem.

Somebody knows how cant I solve it???

King Regards

David Ramos