Answer / sudheer113

 The Designer does not allow you to connect multiple active transformations or an active and a passive transformation to the same downstream transformation or transformation input group because the Integration Service may not be able to concatenate the rows passed by active transformations. For example, one branch in amapping contains an Update Strategy transformation that flags a row for delete. Another branch contains an Update Strategy transformation that flags a row for insert. If you connect these transformations to a single transformation input group, the Integration Service cannot combine the delete and insert operations for the row.

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