Mappings Section
The Mappings section is a dictionary of source fields mapped to the output field names.
Keys should be the source fields. Keys do not need to exist in the source file if a Defaults or Operation creates the field during processing.
Mappings should only contain fields that will be in the final output.
The order of fields in Mappings does not determine the order of fields in the output. The order of fields in the output is determined by supplying a list of fields to the field key in the Output Section.
Examples
"Mappings": {
"Customer Id": "External ID",
"First Name": "First Name",
"Last Name": "Last Name",
"Country": "Country",
"Phone 1": "Phone",
"Phone 2": "Cell",
"Email": "Email",
"Postal Code": "Zip"
}