Hi,

We have set up Email to Case functionality. We are getting this error at least once in a day and the case is not opened:

UNABLE_TO_LOCK_ROW : unable to obtain exclusive access to this record

We have gone through this knowledge Article: https://help.salesforce.com/apex/HTViewSolution?urlname=Email-to-Case-error-UNABLE-TO-LOCK-ROW-unable-to-obtain-exclusive-access-to-this-record&language=en_US (https://help.salesforce.com/apex/HTViewSolution?urlname=Email-to-Case-error-UNABLE-TO-LOCK-ROW-unable-to-obtain-exclusive-access-to-this-record&language=en_US)

But, when case is created, we are not updating any parent record of it.

What is the reason of this issue?

Thanks,
Rupali