Matter : SRP update error: domain name or RRset is duplicated when using generated factory data.

[abollaert]

Hi,

I've been working on generating my own factory data (using the matter weather station application as an example). I'm using the generate_nrfconnect_chip_factory_data.py script to generate the factory data JSON, and then convert it to a hex file using generate_nrfconnect_chip_factory_data.py.

I also replaced the example device info provider with an internal flash based FactoryDataProvider, and all seems to work properly (I can see the device logging the data that was generated (serial number, discriminator and more)).

However, since using my own factory data, I'm having problems commissioning the device using HomeKit or Google Home (both worked before with the example info provider).

The error I'm getting is [DL]SRP update error: domain name or RRset is duplicated. A quick google doesn't seem to reveal anything however.

I: 76165 [ZCL]Commissioning window is now open
D: 76170 [DMG]Command handler moving to [ Preparing]
D: 76174 [DMG]Command handler moving to [AddingComm]
D: 76179 [DMG]Command handler moving to [AddedComma]
D: 76184 [DMG]Decreasing reference count for CommandHandler, remaining 0
I: 76191 [EM]<<< [E:20170r M:230458302 (Ack:222677858)] (S) Msg TX to 1:06C83329FB703318 [1F5D] --- Type 0001:09 (IM:InvokeCommandResponse)
I: 76203 [IN](S) Sending msg 230458302 on secure session with LSID: 19546
D: 76211 [DMG]Command handler moving to [CommandSen]
D: 76216 [DMG]Command handler moving to [AwaitingDe]
I: 76266 [EM]>>> [E:20170r M:222677859 (Ack:230458302)] (S) Msg RX from 1:06C83329FB703318 [1F5D] --- Type 0000:10 (SecureChannel:StandaloneAck)
D: 76477 [EM]Found matching exchange: 20170r, Delegate: (nil)
D: 76483 [EM]Rxd Ack; Removing MessageCounter:230458302 from Retrans Table on exchange 20170r
E: 76581 [DL]SRP update error: domain name or RRset is duplicated
E: 78565 [DL]SRP update error: domain name or RRset is duplicated
E: 81827 [DL]SRP update error: domain name or RRset is duplicated
E: 87231 [DL]SRP update error: domain name or RRset is duplicated
E: 96270 [DL]SRP update error: domain name or RRset is duplicated
E: 111494 [DL]SRP update error: domain name or RRset is duplicated
E: 137226 [DL]SRP update error: domain name or RRset is duplicated
E: 180823 [DL]SRP update error: domain name or RRset is duplicated
E: 254806 [DL]SRP update error: domain name or RRset is duplicatedI: 76165 [ZCL]Commissioning window is now open
D: 76170 [DMG]Command handler moving to [ Preparing]
D: 76174 [DMG]Command handler moving to [AddingComm]
D: 76179 [DMG]Command handler moving to [AddedComma]
D: 76184 [DMG]Decreasing reference count for CommandHandler, remaining 0
I: 76191 [EM]<<< [E:20170r M:230458302 (Ack:222677858)] (S) Msg TX to 1:06C83329FB703318 [1F5D] --- Type 0001:09 (IM:InvokeCommandResponse)
I: 76203 [IN](S) Sending msg 230458302 on secure session with LSID: 19546
D: 76211 [DMG]Command handler moving to [CommandSen]
D: 76216 [DMG]Command handler moving to [AwaitingDe]
I: 76266 [EM]>>> [E:20170r M:222677859 (Ack:230458302)] (S) Msg RX from 1:06C83329FB703318 [1F5D] --- Type 0000:10 (SecureChannel:StandaloneAck)
D: 76477 [EM]Found matching exchange: 20170r, Delegate: (nil)
D: 76483 [EM]Rxd Ack; Removing MessageCounter:230458302 from Retrans Table on exchange 20170r
E: 76581 [DL]SRP update error: domain name or RRset is duplicated
E: 78565 [DL]SRP update error: domain name or RRset is duplicated
E: 81827 [DL]SRP update error: domain name or RRset is duplicated
E: 87231 [DL]SRP update error: domain name or RRset is duplicated
E: 96270 [DL]SRP update error: domain name or RRset is duplicated
E: 111494 [DL]SRP update error: domain name or RRset is duplicated
E: 137226 [DL]SRP update error: domain name or RRset is duplicated
E: 180823 [DL]SRP update error: domain name or RRset is duplicated
E: 254806 [DL]SRP update error: domain name or RRset is duplicated

For reference: the factory data I generated:

{
  "version": 1,
  "sn": "177449",
  "vendor_id": 65521,
  "product_id": 32784,
  "vendor_name": "Vendor",
  "product_name": "Product",
  "date": "2022-12-15",
  "hw_ver": 0,
  "hw_ver_str": "r0",
  "rd_uid": "hex:caa92daded1e2067b278f9f04c8ddc3c",
  "dac_cert": "hex:308201e73082018ea0030201020208467f5762c8dc90d5300a06082a8648ce3d040302303d3125302306035504030c1c4d6174746572204465762050414920307846464631206e6f2050494431143012060a2b0601040182a27c02010c04464646313020170d3232303333313030303030305a180f39393939313233313233353935395a30533125302306035504030c1c4d61747465722044657620444143203078464646312f30783830313031143012060a2b0601040182a27c02010c044646463131143012060a2b0601040182a27c02020c04383031303059301306072a8648ce3d020106082a8648ce3d0301070342000439ef6c9d9c997ba2c7319a4c73c9bf47dbcdbc42c5413eec145275b88fc11ab1ad0bc33ef14c279404429f2f5ee70a051b72e6c7b9e7354edaf92ab4fff8842fa360305e300c0603551d130101ff04023000300e0603551d0f0101ff040403020780301d0603551d0e0416041432fc27d1ef5343a2f364f02cf470cb674780e5aa301f0603551d2304183016801463540e47f64b1c38d13884a462d16c195d8ffb3c300a06082a8648ce3d040302034700304402206f11b2050bd3d2e36c246130086c2201b08cf99d5a77b23a900500fbef0913b20220136ab6a0bb8bd4f4adf80a1234cfefb67f0afb7355f1dca472da16ac4a3664e5",
  "dac_key": "hex:dafb2c7288a4708669230d9fdba8953f103ba85ad5cf94aa713de0a23eb4bede",
  "pai_cert": "hex: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",
  "passcode": 83665196,
  "spake2_it": 10000,
  "spake2_salt": "hex:1e134ebb0470a1b0bb8233a078d9aaaca50f81f62bac2cb6",
  "spake2_verifier": "hex:dc401e304bc78b1c443c5cff6b832c1ae542cdd85a4b87a290c450d8293fe6150444dbb0ffbbfa05b7fc6e487e92bd9d2be76e5668872dc9a09ec1fbc124dbbfe6374e6ae2b162cd4bc2d160886c46ce1653b828aa1173ef5c58fce6f5f348ed49",
  "discriminator": 2677,
  "enable_key": "hex:168963dbc92ceff652c58e56fced20e0"
}

I suppose there must be something I'm missing here, but I thought the SRP name was generated based on the EUI64, which is unique per device?

Can anyone share some pointers as to what is causing this error?

Thanks and kind regards,

-Alex

[abollaert]

Hi Andreas,

sorry for the late reply, I was on vacation.

I just solved the issue by moving everything on the internal flash for now (which meant I had to decrease the allotted size for the primary_app though which is something I was trying to avoid). But once I did that the issue went away.

I also tried moving the factory data onto the external flash but that doesn't seem to be supported.

Kind regards,

Alex

[abollaert]

Hi Andreas,

went back to this issue again, and figured out how to resolve it properly by looking at the matter weather station example.

Apparently you can override the FPROTECT_BLOCK_SIZE in the Kconfig like so:

# Overwrite the Fprotect block size to fit the size of the factory data partition.
# See lib/fprotect/Kconfig to get full description of this config.
config FPROTECT_BLOCK_SIZE
	hex
	default 0x1000

I must have missed this before (going with the defaults).

Kind regards,

-Alex

[AHaug]

Hi,

Glad to hear you found a solution. 

Let me know if we can close this case and verify the solution and/or if you have any additional questions to the topic in this case

Kind regards,
Andreas

[abollaert]

Hi Andreas,

sure the ticket can be closed.

Thanks,

-Alex