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I visited Reconfiguring a WiFi Access Point's wireless settings through WPS?

When I'm running

wpa_cli -g /var/run/wpa_supplicant

it's opening further Interactive mode. But over here when I am writing

wps_reg 02:34:56:78:9a:bc 12345670 clear OPEN NONE ""

it's showing

Invalid WPS_REG command: need two arguments:

Every time it's showing that error.

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