If Basic Station MAC address contains zero, then Basic Station cannot make EUI from it.
As for example, if Basic Station has MAC address
"ether b8:17:eb:f4:05:d4",
then Basic Station make EUI from MAC address like
"Station EUI : b817:ebff:fef4:5d4"
instead of
"Station EUI : b817:ebff:fef4:05d4",
i.e. the customer cannot use your device if its MAC address contains zero.