Frequency Codes allow you to group together recurring purchase orders that you might want to generate together. For information on recurring purchase orders, see Creating a Recurring Purchase Order. Frequency Codes are user-defined, six character codes that represent the different groupings you use. When you generate recurring orders, you can select them based on their Frequency Code. For example, you might create a Frequency Code of MONTH for purchase orders that should be generated on a monthly basis, or you might create MNTH15 to group together all transactions that should be generated on the fifteenth day of each month.