My exchange activesync shows twice in my adressbook (Samsung s7)

I have a Samsung s7 and fore some time (?) in my adressbook the Exchange activesync shows up 2 times, i don't mean it has double entrys but it shows when a adjust a contact at the top:
: "GOOGLE | EXCHANGE ACTIVESYNC | EXCHANGE ACTIVESYNC | WHATSAPP"

Thanks,
Marcel

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