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bs881026bs881026 

Duplicate records while updating via data loader

Hello there,

I have a scenario like, I file with duplicate records and I need to perform the update operation.
What excatly will happen when I will try to perform the update operation with a file with duplicate records.

Thanks
VinayVinay (Salesforce Developers) 
Hi,

You might receive 'Duplicate value found' when updating records usinng data loader.

Review below link for same.

https://help.salesforce.com/articleView?id=000334312&type=1&mode=1

Hope above information was helpful.

Please mark as Best Answer so that it can help others in the future.

Thanks,
Vinay Kumar
bs881026bs881026
Thank you Vinay. 
VinayVinay (Salesforce Developers) 
Hope above information was helpful.

Please mark as Best Answer so that it can help others in the future.

Thanks,
Vinay Kumar