anchor.diff:  [[get-field-mapping-api-specific-fields-ex]]
   ===== Specifying fields
   
  -The get mapping api allows you to specify a comma-separated list of fields.
  +The get mapping API allows you to specify a comma-separated list of fields.
   
   For instance to select the `id` of the `author` field, you must use its full name `author.id`.
   
  
positive.code: <titleabbrev>Get field mapping</titleabbrev>
  ++++
  
  Retrieves <<mapping,mapping definitions>> for one or more fields. This is useful
  if you don't need the <<indices-get-mapping,complete mapping>> of an index or
  your index contains a large number of fields.
  
  [source,console]
  ----
  
negative.code: 
  `GET /_mapping/field/<field>`
  
  `GET /<target>/_mapping/field/<field>`
  
  
  [[get-field-mapping-api-path-params]]
  ==== {api-path-parms-title}
  
  `<target>`::
  (Optional, string)
  Comma-separated list of data streams, indices, and index aliases used to limit
  the request. Wildcard (`*`) expressions are supported.
  +
  To target all indices in a cluster, omit this parameter or use `_all` or `*`.
  
  `<field>`::
  (Optional, string) Comma-separated list or wildcard expression of fields used to
  