# Trying to add devices to blacklist

**URL:** <https://forum.genieacs.com/t/trying-to-add-devices-to-blacklist/7205>\
**Category:** Uncategorized\
**Created:** [October 16, 2025, 2:25pm UTC](https://forum.genieacs.com/t/trying-to-add-devices-to-blacklist/7205 "2025-10-16T14:25:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![raylen](https://avatars.discourse-cdn.com/v4/letter/r/bcef8e/32.png) [@raylen](https://forum.genieacs.com/u/raylen)\
**Post date:** [October 16, 2025, 2:25pm UTC](https://forum.genieacs.com/t/trying-to-add-devices-to-blacklist/7205/1 "2025-10-16T14:25:29Z")

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Hello everyone,

Im trying to add devices to a blacklist on the router via the API but this is the error I am getting when I send the command.

faultCode: “9003”  
faultString: Invalid arguments  
setParameterValuesFault:

- parameterName: Device.Firewall.Chain.2.Rule.3.X\_TP\_SourceMACAddress  
faultCode: “9002”  
faultString: Internal error
- parameterName: Device.Firewall.Chain.2.Rule.3.X\_TP\_RuleName  
faultCode: “9002”  
faultString: Internal error
- parameterName: Device.Firewall.Chain.2.Rule.3.Enable  
faultCode: “9002”  
faultString: Internal error

I don’t know why it says “Device.” when I sent the command as “InternetGatewayDevice.”

This is what I sent in the request:  
{  
name: ‘setParameterValues’,  
parameterValues: [  
[‘InternetGatewayDevice.Firewall.Chain.2.Rule.3.X\_TP\_RuleName’, deviceName],  
[‘InternetGatewayDevice.Firewall.Chain.2.Rule.3.X\_TP\_SourceMACAddress’,macAddress],  
[‘InternetGatewayDevice.Firewall.Chain.2.Rule.3.Enable’, true]

]}

It will be much appreciated if someone can please help me.

Thanks

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<div class="post-metadata">

**Author:** ![akcoder](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/akcoder/32/11_2.png) [@akcoder](https://forum.genieacs.com/u/akcoder)\
**Post date:** [October 16, 2025, 4:25pm UTC](https://forum.genieacs.com/t/trying-to-add-devices-to-blacklist/7205/2 "2025-10-16T16:25:12Z")

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> The CWMP fault code 9002 indicates an “Internal error.”

That means look on the device logs, on the serial console of the device, or contact your vendor.