string, Date
OpenContracting Description: The start date for the period.
string, Date, required
OpenContracting Description: The end date for the period.
startDate should always precede endDate.
Date/time in Date Format: ISO 8601.
float, required
OpenContracting Description: Amount as a number.
Should be positive.
string, required
OpenContracting Description: The currency in 3-letter ISO 4217 format.
bool, required
Date when changes were recorded.
List of Change objects
string, required, default = UAH