|System.DmlException: Upsert failed. First exception on row 0; first error: DUPLICATE_VALUE, duplicate value found:

Hi All,

I am getting an exception

USER_DEBUG [6]|DEBUG|System.DmlException: Upsert failed. First exception on row 0; first error: DUPLICATE_VALUE, duplicate value found: <unknown> duplicates value on record with id: <unknown>: []

when I am trying to insert an EntitySubscription record

EntitySubscription en=new EntitySubscription(NetworkId = commId, SubscriberId = sid, ParentId = pid);
try{upsert en;}catch(Exception e){System.debug(e);}

I checked for duplicate records but there are no duplicate i could find in workbench

Thanks

March 13, 2016
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Best Answer chosen by sijumv2

TintuBabu
Hi
Please check this.
http://danielsokolowski.blogspot.in/2014/08/duplicate-value-found-duplicates-value.html
https://sfdcdev.wordpress.com/2011/07/08/upsert-failed-first-exception-on-row-0-first-error-duplicate_value/

March 13, 2016
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This was selected as the best answer

sijumv2
Sorry Tintu, tried that its not working. Thanks

March 14, 2016
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Daniel Howell
Try and specify the field to upsert on
Instead of
upsert en;
Try
upsert en custom_field__c;

October 29, 2017
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