SLT Duplicate key error.

Hi

I am facing the "Z_ZTEST1_004: Run 0000000001 aborted due to DUPLICATE KEY on 20160715 at 145833.

I am using a new Z table for the test and the table do not exits in target system.

Do not able to figure it out from where it getting the duplicate key.

In some post in SCN says -

Fix the issue in the target system or change transfer behaviour to 3.

But how to do it. Please let me know the process.

Thanks

Sudip.