Additional data may be included in an authorization request for future retrieval by using custom fields. The value of the custom field parameter is a series of name-value pairs that are meaningful to the merchant.
If you use Run Merchant for transaction reporting, you must enable these fields from the Settings page to ensure the fields populate correctly in the transactions table. You must enable a custom field with an empty value to preserve the expected order of the fields.
Transaction custom fields are optional fields that can be used to capture order data. This information is stored with the transaction. Transaction custom fields are not saved with a vaulted payment account.
Examples: Invoice ID, PO Number, Tracking Information
Account custom fields are optional fields that can be used to capture account data. This information and will be stored with the transaction AND in the payment account if it is saved to the vault.
Examples: Customer ID, Account Number, Customer Note