Changes to Create a stock transfer

added the new required request property data/relationships/destination_stock_location/data

added the new required request property data/relationships/line_item/data

added the new required request property data/relationships/origin_stock_location/data

added the new required request property data/relationships/shipment/data

added the new required request property data/relationships/sku/data

request property data/type was restricted to a list of enum values

removed the request property data/relationships/destination_stock_location/id

removed the request property data/relationships/destination_stock_location/type

removed the request property data/relationships/line_item/id

removed the request property data/relationships/line_item/type

removed the request property data/relationships/origin_stock_location/id

removed the request property data/relationships/origin_stock_location/type

removed the request property data/relationships/shipment/id

removed the request property data/relationships/shipment/type

removed the request property data/relationships/sku/id

removed the request property data/relationships/sku/type

added the new optional request property data/attributes/number

the type request property default value stock_transfers was removed

added the new stock_transfers enum value to the request property data/type

added the media type application/vnd.api+json for the response with the status 201