Response gets worse using [Concatenate] in Merge Mapper

Question

Response gets worse using [String]-[Calculation]-[Concatenate] in Merge Mapper.
How can I resolve this problem?

Answer

[Concatenate] in Merge Mapper converts all data in the specified column to XML.
Therefore, the response tends to get worse than [Concatenate] in Mapping.

We reccomend to concatenate in Mapping unless there is a reason to use Merge Mapper.