Problem with XAction, Loop on result-set

[kcs_chandra]

Hi, In XAction, I have the following

1. SQLLookupRule with a column 'consultant_id' as string
2. Loop on result set of the above step
   
   1. Hello World with message mapped to 'consultant_id'
   
   

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XAction Code goes here.

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While executing the Action Sequence I got the Error

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Following is the brief of the error.

The requested parameter "quote" has a NULL value

(This has been mapped to consultant_id column of Result-set)

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Please help me in solving the above issue.

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Thanks in Advance,

Chandra.