Reindex API: An unexpected authentication error occurred

Hello everyone,
I'm trying to migrate an index from Cluster A to Cluster B using the Reindex from remote

Add each ip segment in my whitelist in both cluster:

reindex.remote.whitelist: ["123.176.49.*:9200","123.188.49.*:9200","123.176.61.*:9200","*.ardp.local"]
reindex.ssl.verification_mode: none

This is how my connection looks in Dev Tool:

POST _reindex
{
  "source": {
    "remote": {
      "host": "https://123.176.61.87:9200"
    },
    "index": "pages",
    "query": {
      "match": {
        "test": "data"
      }
    }
  },
  "dest": {
    "index": "my-pages"
  }
}

When executing the reindex action I get the following error

An unexpected authentication error occurred. Please log in again.
https://123.176.49.21:5601/logout?msg=AUTHENTICATION_ERROR&next=%2Fapp%2Fdev_tools%23%2Fconsole

Several days ago I have been looking for information on how to perform an index migration from one cluster to another but I was unsuccessful.
Any suggestions on how I should migrate?

Regards.

Gonzalo.

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