Date stream can not be created with uppercase name?

Elastic Stack Elasticsearch
1

Why can't date stream names contain uppercase letters?

PUT _data_stream/Log

# response
{
  "error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "data_stream [Log] must be lowercase"
      }
    ],
    "type" : "illegal_argument_exception",
    "reason" : "data_stream [Log] must be lowercase"
  },
  "status" : 400
}
2

Hi,

The requirement for data stream names to be lowercase is a design decision made by Elasticsearch. This is to ensure consistency and to avoid potential issues with case sensitivity across different systems and platforms.

Regards