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Re-uploading a list into Marketo

Question asked by dfc9c7de79c893a58e531557e2aebf8bbd6137c7 on Jun 8, 2018
Latest reply on Jun 8, 2018 by Grégoire Michel

Hello Marketo Community!


I am still learning how Marketo works and just recently made the mistake of re-uploading a list that had been used for an email send from the previous week. I understand by doing this that dupilicate contacts can be created and bigger problems can occur.


Could someone offer a solution on how to fix this problem?


Additionally, could someone share some insight on why a previously uploaded list should never be reuploaded into Marketo? I'm trying to get some context on my error.


Thank you!