Delete data

Hello,

  I have a process where I want first delete all data from a variable, before update the datas.

  This variable is multiple, for example the variable Directory which I have all the directions of persons of a town in. 

  Well, I am using the smart service "Delete from Data Store Entities" but I have an error: "An error occurred while trying to retrieve the data store entity [id=]. Verify that the data store and entity have not been deleted, and have the correct security settings. No data was deleted".

  Someone knows the problem?

Thank you so much :)

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