Pentaho Common Errors : Error converting data while looking up value

Error Message

Stream lookup.0 - ERROR (version 5.4.0.1-130, build 1 from 2015-06-14_12-34-55 by buildguy) : Unexpected error
Stream lookup.0 - ERROR (version 5.4.0.1-130, build 1 from 2015-06-14_12-34-55 by buildguy) : org.pentaho.di.core.exception.KettleStepException:
Stream lookup.0 - Error converting data while looking up value
Stream lookup.0 -

Stream lookup.0 - Unexpected conversion error while converting value [prod_id String(15)<binary-string>] to an Integer
Stream lookup.0 - java.lang.String cannot be cast to [B
Stream lookup.0 -
Stream lookup.0 -     at org.pentaho.di.trans.steps.streamlookup.StreamLookup.lookupValues(StreamLookup.java:267)
Stream lookup.0 -     at org.pentaho.di.trans.steps.streamlookup.StreamLookup.processRow(StreamLookup.java:446)
Stream lookup.0 -     at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62)
Stream lookup.0 -     at java.lang.Thread.run(Unknown Source)
Stream lookup.0 - Caused by: org.pentaho.di.core.exception.KettleValueException:
Stream lookup.0 - Unexpected conversion error while converting value [prod_id String(15)<binary-string>] to an Integer
Stream lookup.0 - java.lang.String cannot be cast to [B
Stream lookup.0 -
Stream lookup.0 -     at org.pentaho.di.core.row.value.ValueMetaBase.getInteger(ValueMetaBase.java:1783)
Stream lookup.0 -     at org.pentaho.di.core.row.value.ValueMetaBase.convertDataCompatible(ValueMetaBase.java:3581)
Stream lookup.0 -     at org.pentaho.di.trans.steps.streamlookup.StreamLookup.lookupValues(StreamLookup.java:265)
Stream lookup.0 -     ... 3 more
Stream lookup.0 - Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to [B
Stream lookup.0 -     at org.pentaho.di.core.row.value.ValueMetaBase.getInteger(ValueMetaBase.java:1723)
Stream lookup.0 -     ... 5 more
Stream lookup.0 - Finished processing (I=0, O=0, R=10001, W=0, U=0, E=1)
trf_Demo_Load_CSV_File - Transformation detected one or more steps with errors.
trf_Demo_Load_CSV_File - Transformation is killing the other steps!

Root Cause

Stream lookup - lookup value match error.
Data type not matching for keys to lookup.

Example :
Data types for prod_id and id not matching.

Resolution

Data types for prod_id and id should be matching.