Implement a rest API for elasticsearch.
Follow the client's index's mapping.
Generate json document from Java pojos, given by the client.
Jsons don't match the schema mapping, one (at least) field, for geographic coordinates, is in another format.
Ask the client for explanation.
Client response, after 6 hours:
"We build it in this shape so you have to convert them to another format before posting into ES".
What the hell is wrong with you?!