Hi @ri,shoshun ,
Thanks for reaching out.
Unfortunately deleting of Salesforce records using Azure data factory is not supported. Below is an already existing feature request submitted by another user in ADF feedback forum. I would encourage you to please up-vote and/or comment on this feature request as it would help to increase the priority of this feedback.
Hope this info helps
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Please don’t forget to Accept Answer
and Up-Vote
wherever the information provided helps you, this can be beneficial to other community members.