Referring to the “Get available field list for End of Day - HTTP response” part of this tutorial. The call doesn’t return “Maturity Date” although data for that field is returned when added to “Get End of Day data - HTTP request”
Get available field list for End of Day - HTTP request
If you do not know what field lists are available, you can request a list of those available.
The report template type must be specified in the path. As we want End of Day data we set a value of EndOfDayPricing. The following tutorials show other possibilities.