Hi Ajit Kurane,

To find the duplicate element in list,

you can sort the list by attribute and simply check current record with previous record.

To remove the duplicate element, you can use ListDistinct action 

https://success.outsystems.com/Documentation/11/Reference/OutSystems_APIs/System_Actions#ListDistinct

The output parameter of DistinctList will return only the record include the distinct elements of the source list.

 Regards,

Ellakkiya.S

Hi Ajit,

You can see this solution How to check duplicates in list - OutSystems 11 | OutSystems 

Hope this help,

Khuong