Aliases Error in Ingest pipeline Index

Hi Team,

We are processing the logs using API key from below path.
C# -> ingest pipeline -> Elasticsearch -> kibana

We ran the below template but Aliases not working, it shows none. Please find the snapshot attached.

Could you please help us to fix the issue.

PUT _index_template/xxx_template
  "index_patterns": [
  "template": {
    "settings": {
      "number_of_shards": 2,
      "": "DeleteIndexAfter12monthsTest",
      "index.lifecycle.rollover_alias": "xxx"


Take a look at Troubleshooting index lifecycle management errors | Elasticsearch Guide [8.7] | Elastic, it should help.

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