Changing source/target structure without recreating mapping

Question

Hi Experts,
There is a requirement where we need to add one field in target structure of an interface. Based on my limited knowledge, I know that if source or target structures are changed then the entire mapping has to be recreated from scrach. Is my understanding correct? If not, how do I go about this change?
Thanks,
Dhawal

Answer 1

In any version of XI/ PI you can insert the new fields/ nodes at the end of the parent segment....if done in this manner then the mapping wont be lost:
Old:
<SRC>
<Name>
<First>
</Name>
</SRC>
New
<SRC>
<Name>
<First>
<Last>
</Name>
</SRC>
In this case the mapping wont be lost....however if you add a new node somewhere in middle or at the top of the existsing nodes then mapping will be lost:
<SRC>
<Name>
<Last>
<First>
</Name>
</SRC>
In short the sequencce of apperance of nodes should not change
Regards,
Abhishek.