Informatica 7.1 : Error TE_7016; port unbound in some Transformation

This is mainly a transformation error.
According to Troubleshooting guide:

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TE_7016: Failed to allocate/intialize server transformation < transformation name >
Cause: Internal allocation or initialization error.
Action: Contact Informatica technical support.
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In such case check for unconnected ports in transformations.And specially be aware while importing/exporting mappings from one env to another.In that time the ports may be disconnected.

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