Mikrotik User manager Prepaid Billing System with Hotspot co

On Mikrotik have configured two lan cards.

  1. ether1 = ip 172.16.0.1/ 16 - LAN Interface
  2. ether2 = ip 192.168.15.251/24 - WAN interface connected with internet
    im getting following error message during Mikrotik User manager Prepaid Billing System with Hotspot configuration on the user manager router ip address 172.16.0.1 or 127.0.0.1

“operation failed: ip address is already used”
router-error.jpg
What could be my problem?

also my configs:

jan/02/1970 01:30:58 by RouterOS 6.0

software id = CM2E-LEB0

/ip hotspot profile
add hotspot-address=172.16.0.1 login-by=http-chap name=hsprof1 nas-port-type=
ethernet use-radius=yes
/ip hotspot user profile
set [ find default=yes ] idle-timeout=none keepalive-timeout=2m
mac-cookie-timeout=3d
/ip pool
add name=hs-pool-1 ranges=172.16.100.1-172.16.255.254
/ip dhcp-server
add address-pool=hs-pool-1 disabled=no interface=ether1 lease-time=1h name=
dhcp1
/ip hotspot
add address-pool=hs-pool-1 addresses-per-mac=1 disabled=no interface=ether1
name=hotspot1 profile=hsprof1
/port
set 0 name=serial0
/tool user-manager customer
add backup-allowed=yes disabled=no login=admin password=123456
paypal-accept-pending=no paypal-allowed=no paypal-secure-response=no
permissions=owner signup-allowed=no time-zone=-00:00
add backup-allowed=yes disabled=no login=MikroTik password=qwerty
paypal-accept-pending=no paypal-allowed=no paypal-secure-response=no
permissions=owner signup-allowed=no time-zone=-00:00
add backup-allowed=no disabled=no login=test parent=admin password=test
paypal-accept-pending=no paypal-allowed=no paypal-secure-response=no
permissions=read-write signup-allowed=no time-zone=-00:00
/tool user-manager profile
add name=staff name-for-users=“” override-shared-users=1 owner=admin price=0
starts-at=logon validity=0s
add name=students name-for-users=“” override-shared-users=off owner=admin
price=0 starts-at=logon validity=0s
/tool user-manager profile limitation
add address-list=“” download-limit=0B group-name=“” ip-pool=“” name=
updownstaff rate-limit-min-rx=271360B rate-limit-min-tx=57344B
rate-limit-rx=271360B rate-limit-tx=57344B transfer-limit=0B
upload-limit=0B uptime-limit=0s
/ip address
add address=192.168.15.251/24 interface=ether2 network=192.168.15.0
add address=172.16.0.1/16 interface=ether1 network=172.16.0.0
/ip dhcp-server network
add address=172.16.0.0/16 comment=“hotspot network” gateway=172.16.0.1
/ip dns
set allow-remote-requests=yes servers=8.8.8.8,8.8.4.4
/ip firewall filter
add action=passthrough chain=unused-hs-chain comment=
“place hotspot rules here” disabled=yes
/ip firewall nat
add action=passthrough chain=unused-hs-chain comment=
“place hotspot rules here” disabled=yes
add action=masquerade chain=srcnat comment=“masquerade hotspot network”
src-address=172.16.0.0/16
/ip hotspot user
add name=admin password=admin
/ip route
add distance=1 gateway=192.168.15.254
/radius
add address=127.0.0.1 secret=123456 service=hotspot
/radius incoming
set accept=yes
/tool user-manager router
add coa-port=1700 customer=MikroTik disabled=no ip-address=127.0.0.1 log=
auth-fail name=router1 shared-secret=123456 use-coa=no
add coa-port=1700 customer=MikroTik disabled=no ip-address=172.16.0.1 log=
auth-fail name=router2 shared-secret=123456 use-coa=no
/tool user-manager user
add customer=admin disabled=no name=admin password=admin shared-users=1
wireless-enc-algo=none wireless-enc-key=“” wireless-psk=“”
add customer=admin disabled=no name=test password=test shared-users=1
wireless-enc-algo=none wireless-enc-key=“” wireless-psk=“”
add customer=test disabled=no name=demo password=test shared-users=1
wireless-enc-algo=none wireless-enc-key=“” wireless-psk=“”
add customer=test disabled=no name=test password=test shared-users=1
wireless-enc-algo=none wireless-enc-key=“” wireless-psk=“”
add customer=MikroTik disabled=no name=MikroTik password=MikroTik
shared-users=1 wireless-enc-algo=none wireless-enc-key=“” wireless-psk=“”

Use the LAN ip address in “ip address” box,
for example, if you have configured 192.168.0.1 in the Mikrotk LAN ip, then use the same here.
Same applies to Mikrotik Radius Section.

thanks @aacable. you have been of great help.

If you have logged in as another customer (not the Parent) and try to add same router this message will appear. I’d normally not allow any child users to access router setup (i.e untick tick top access item when creating customers).