# Investigating reindexing error (1.7 -\> 5.6) **URL:** \ **Category:** Elasticsearch\ **Created:** [August 14, 2019, 3:44pm UTC](https://discuss.elastic.co/t/investigating-reindexing-error-1-7-5-6/195232 "2019-08-14T15:44:33Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![maniard](https://avatars.discourse-cdn.com/v4/letter/m/41988e/32.png) [@maniard](https://discuss.elastic.co/u/maniard)\ **Post date:** [August 14, 2019, 3:44pm UTC](https://discuss.elastic.co/t/investigating-reindexing-error-1-7-5-6/195232/1 "2019-08-14T15:44:33Z")
Hi, I am trying to reindex my 1.7.5 ES cluster into a 5.6 one using Reindex API. While most indices are migrated successfully, for one of them I am getting the following error: ```auto org.elasticsearch.ElasticsearchException: Error parsing the response, remote is likely not an Elasticsearch instance (...) Caused by: org.elasticsearch.common.ParsingException: [search_response] failed to parse field [hits] (...) Caused by: com.fasterxml.jackson.core.JsonParseException: Unexpected character (':' (code 58)): was expecting comma to separate Array entries ``` Since each time reindexing process for this particular index reaches around 80% completeness and then the error is shown, I suspect there is a document in the index that's causing the problem. How can I investigate this case? I was trying to find logged search responses (from source to target) but with no success. Source node is logging search requests, but these don't contain any valuable information. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 11, 2019, 3:44pm UTC](https://discuss.elastic.co/t/investigating-reindexing-error-1-7-5-6/195232/2 "2019-09-11T15:44:40Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.