Meaning of a.v

[ethanr]

Hi
We are using Dataset,transformer,lookup,copy stage only in a job. While running we are getting the following error.

" link between the two operators must be named as a.v. use copy stage for persistent data"

Where is the problem. we are not trying to achieve any hash file logic here and using different dataset to read and write.

[Jayesh_09]

Are you reading and writing to the same dataset.

[ray.wurlod]

Please post the entire error, so we can determine which operator (or pair of operators) is generating it.