Duplication
1. Description
The Duplication Derivation Type is used to validate for duplicate entries in specified duplication key columns.
2. Screen Configuration

For the provided columns values it will form a key by joining the values using underscore and checks if the key is occuring more than one time. Let's assume CustId="C1" and AccNum="A01", then it will give "C1_A01" in the output.
3. Required Fields
- name: Output Field Name.
- data_type: Output Field Type. Possible values are: "String".
- dervation
- derivation_type: The derivation type used is "Duplication".
- req_fields
- columns: Field names from the input metadata.