Hi team,
I have to add a list of employees at my back end(AX and excel) .I can upload an excel file which has details of the employees.While adding the data to the grid and submitting it I have to check whether the same email id is present in the AX system or in the uploaded excel file. I'm very confused as how to check for duplicate entry in the uploaded file.
I have a seperate text box and Upload button to add the excel file. Please Help.

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