The wrong thing I wrote is that my input file looks like this:
I build this file with a python script from scratch based on the xml file every minute and this csv file has been monitored all the time in splunk. When updating, the address of the mac, etc., the signal strength, last seen etc., changes. And every time I rebuild this file, the csv in splunk shows me a new entry to each maca, even if it was already there. My main point is not to add a new maca entry and update the signal value etc.
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