NetSuite Connection Issue - Post Sandbox Refresh

Hello,

We are reauthorising NetSuite Connection, post NetSuite Sandbox refresh and received the below error. We looked into NetSuite and noticed that the integration records under Setup -> Integrations -> Manage Integrations are missing. So, we uninstalled & reinstalled the integrator.io bundle which created the integration records in NetSuite.

Now, we are able to setup the custom NetSuite connections. However, when we tried to reauthorize the NetSuite connection in the Integration App (Amazon - NetSuite & Shopify - NetSuite), we still received the same error. It seems to be related to iClient. Also, the integration record 'eTail Connectors (Token-Based Auth)' is still missing in NetSuite Sandbox. I created this integration record manually and still faced the same issue. Any suggestions on a possible fix (apart from reinstalling the integration app) are greatly appreciated!

Error Message:

Sorry, but we were not able to successfully authenticate your connection.
{"code":"oauth_statuscode_mismatch","message":"NetSuite returned statusCode 400, while expected status code is 200. Please view Login Audit Trail in NetSuite for more details. Response body = {\"error\" : {\"code\" : \"USER_ERROR\", \"message\" : \"Invalid login attempt.\"}}\n.","source":"connection","resolved":false,"occurredAt":1777006126539}

NetSuite Admin team has enabled the 'eTail Connectors (Token_Based Auth)' integration record in NetSuite and it fixed the connection issue!