Reindex - index_not_found_exception

I agree @askids. It does seem to point to ROR issue

sscarduzio, Here’s what the ES v5.6 production index looks like…
It has type=Offering

{
    "oim-2019.06.23": {
        "mappings": {
            "Offering": {
                "properties": {
                }
            }
        }
    }
}

here’s the _reindex command…

{
  "source": {
    "remote": {
      "host": "http://production-server.com:9200", 
      "username": "xxxx",    
      "password": "xxxx"
    },
    "index": "oim-2019.06.23",
      "type": "Offering",
    "query": {
      "bool": {
        "must": [
 	      { "terms": { "productidentifier" : ["666004P”, “777602A”, “888603A”, “888634A”, “9995001"] }}
        ]
      }
    }
  },
  "dest": {
    "index": "mark-tst-reindex-2020.10.01"
  } 
}

here’s the error message

{
    "error": {
        "root_cause": [
            {
                "type": "status_exception",
                "reason": "body={\"error\":{\"root_cause\":[{\"type\":\"index_not_found_exception\",\"reason\":\"no such index\",\"resource.type\":\"index_or_alias\",\"resource.id\":\"Offering\",\"index_uuid\":\"_na_\",\"index\":\"Offering\"}],\"type\":\"index_not_found_exception\",\"reason\":\"no such index\",\"resource.type\":\"index_or_alias\",\"resource.id\":\"Offering\",\"index_uuid\":\"_na_\",\"index\":\"Offering\"},\"status\":404}"
            }
        ],
        "type": "status_exception",
        "reason": "body={\"error\":{\"root_cause\":[{\"type\":\"index_not_found_exception\",\"reason\":\"no such index\",\"resource.type\":\"index_or_alias\",\"resource.id\":\"Offering\",\"index_uuid\":\"_na_\",\"index\":\"Offering\"}],\"type\":\"index_not_found_exception\",\"reason\":\"no such index\",\"resource.type\":\"index_or_alias\",\"resource.id\":\"Offering\",\"index_uuid\":\"_na_\",\"index\":\"Offering\"},\"status\":404}",
        "caused_by": {
            "type": "response_exception",
            "reason": "method [POST], host [http://production-server.com:9200], URI [/Offering/_search?scroll=5m&sort=_doc%3Aasc&size=1000&version=false], status line [HTTP/1.1 404 Not Found]\n{\"error\":{\"root_cause\":[{\"type\":\"index_not_found_exception\",\"reason\":\"no such index\",\"resource.type\":\"index_or_alias\",\"resource.id\":\"Offering\",\"index_uuid\":\"_na_\",\"index\":\"Offering\"}],\"type\":\"index_not_found_exception\",\"reason\":\"no such index\",\"resource.type\":\"index_or_alias\",\"resource.id\":\"Offering\",\"index_uuid\":\"_na_\",\"index\":\"Offering\"},\"status\":404}"
        }
    },
    "status": 404
}