Setting multiple custom analyzers to single field in elasticsearch

I am working in ElasticSearch environment, I have installed elasticsearch on my local machine for version 5.4.3. I am trying to create index by defining some settings along with mappings. Following are my settings and mappings,

{  
   "settings":{  
      "index":{  
         "analysis":{  
            "analyzer":{  
               "index_analyzer":{  
                  "filter":[  
                     "standard",
                     "lowercase",
                     "asciifolding"
                  ],
                  "tokenizer":"standard"
               },
               "autocomplete":{  
                  "type":"custom",
                  "tokenizer":"standard",
                  "filter":[  
                     "lowercase",
                     "autocomplete_filter"
                  ]
               },
               "search_analyzer":{  
                  "filter":[  
                     "standard",
                     "lowercase",
                     "asciifolding"
                  ],
                  "tokenizer":"standard"
               },
               "sortable":{  
                  "filter":"lowercaseFilter",
                  "tokenizer":"keyword",
                  "type":"custom"
               }
            },
            "filter":{  
               "lowercaseFilter":{  
                  "type":"lowercase"
               },
               "autocomplete_filter":{  
                  "type":"edge_ngram",
                  "min_gram":1,
                  "max_gram":20
               }
            },
            "tokenizer":{  
               "keyword":{  
                  "type":"keyword"
               }
            }
         }
      }
   }
}

this is my mappings,

{  
   "geo_data":{  
      "_all":{  
         "enabled":true,
         "index_analyzer":"index_analyzer",
         "search_analyzer":"search_analyzer"
      },
      "properties":{  
         "subscriber_level":{  
            "analyzer":"index_analyzer,search_analyzer,autocomplete_analyzer",
            "type":"text"
         },
         "att_id":{  
            "analyzer":"index_analyzer,search_analyzer,autocomplete_analyzer",
            "type":"text"
         },
         "id":{  
            "include_in_all":false,
            "type":"text"
         },
         "name":{  
            "analyzer":"index_analyzer,search_analyzer,autocomplete_analyzer",
            "type":"text"
         },
         "state_name":{  
            "analyzer":"index_analyzer,search_analyzer,autocomplete_analyzer",
            "type":"text"
         }
      }
   }
}

What I want to achieve is, I want to apply all custom analyzers to a single field. But above mappings on fields for analyzers giving following exception,

{  
   "error":{  
      "root_cause":[  
         {  
            "type":"mapper_parsing_exception",
            "reason":"analyzer [index_analyzer,search_analyzer,autocomplete_analyzer] not found for field [subscriber_level]"
         }
      ],
      "type":"mapper_parsing_exception",
      "reason":"analyzer [index_analyzer,search_analyzer,autocomplete_analyzer] not found for field [subscriber_level]"
   },
   "status":400
}

Please anybody can help me to fix this issue, struggling on it.