This article provides a workaround for correcting the error condition.

UI Error:

Unclassified Errors "registration code invalid" unknown reason"

Journal logs

The request specifies an unacceptable value for one or more parameters. (2) - registration code invalid: unknown reason (config/authority/mist-wan-assurance/registration-code)

                               { Request-Id=ZGU3ODQ5OT | user=admin | (t128-candidate v1755839954597) }

#Workaround:

A) Verify if regcode is already expired

Sample:

[email protected]# show mist router 128TRouterA detail | grep regcode

✔ Piping output...

   regcode-expiration:            2025-08-1T02:40:21Z

   regcode-validation:            expired at 2025-08-1T02:40:21Z

[email protected]#

B) To renew new registration code below steps needs to be followed.

Step 1: Navigating to Mist UI - click on Inventory - Need to copy new registration Code by clicking on "Adopt Wan Edges" and select for SSR device

Step 2: To enter the registration code using the SSR Conductor GUI, copy the text registration-code from the Mist portal (info above) and paste it under Configuration > Authority > Mist WAN Assurance > Registration Code.

Step 3: Committing the registration code on conductor pcli enables WAN Assurance on all connected routers. 

Follow below URL for more details.

https://www.juniper.net/documentation/us/en/software/session-smart-router/docs/config_wan_assurance

If you face any further issues, please contact JUNIPER JTAC Support for assistance.