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Activity Use Excel File - Mailing List (Excel Application Card) failed:
Could not open the specified workbook. Make sure there is no other workbook with the same name already opened. If the workbook is password protected, please enter the correct password.
You can find the activity by searching id (press Ctrl + J to jumpt to activity):
01004
Press Retry to re-execute the activity. Press Skip to continue execution from the next activity. Press Skip Item to continue with the next item. Press Stop to stop the execution of the process.