Answer / suraj kedia

When we configure a look up t/r to use a dynamic cache, the
designer automatically adds a port called "New Lookup Row"
to the look up t/r. This port indicates with a numeric value
whether the Informatica server inserts or updates the row in
the cache or makes no change in the cache.

To keep the lookup cache and the target table
synchronised, we pass rows to the target when the New Lookup
Row value is equal to 1 or 2.

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