Error when deleting an accidentally created Account

Error when deleting an accidentally created Account

Hi, thanks for reading, 

Recently i implorted several Assets via CSV to my CMDB module of Service Desk MSP and, due to an error in a comma in the CSV, an account was created instead of a department.

Now, i cannot delete it, it says that the account "is being used by a module", despite I have already changed all the assets accounts and i cannot view any asset in that account, nor any client.

What am I missing? Is there a way to find this related CI? Any hints?

Thanks in advance!
Regards
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