| {{transaction.transaction_id}} | integer | Transaction ID # |
| {{transaction.parent_transaction_id}} | integer | Parent transaction ID # |
| {{transaction.transaction_batch_id}} | integer | Transaction batch ID # |
| {{transaction.customer_id}} | integer | The customer ID # this contact belongs to |
| {{transaction.brand_id}} | integer | Brand ID # |
| {{transaction.gateway_id}} | integer | Payment gateway ID # |
| {{transaction.gateway_type}} | string | Payment gateway type |
| {{transaction.gateway_nickname}} | string | Nickname for the payment gateway |
| {{transaction.gateway_status}} | integer | Payment gateway status (1 for success, 0 for failure) |
| {{transaction.gateway_transid}} | string | Payment gateway transaction identifier |
| {{transaction.gateway_transid}} | string | Payment gateway transaction identifier |
| {{transaction.gateway_method}} | string | Payment gateway method |
| {{transaction.gateway_msg}} | string | A customer-facing error message indicating why the transaction declined/failed |
| {{transaction.gateway_err_code}} | integer | A merchant-facing specific error code indicating why the transaction declined/failed |
| {{transaction.gateway_err_detail}} | string | A merchant-facing detailed error message indicating why the transaction declined/failed |
| {{transaction.gateway_opts}} | mixed | Additional gateway-specific data |
| {{transaction.token}} | string | A unique token for the transaction |
| {{transaction.external_key}} | string | Transaction external key value |
| {{transaction.currency_id}} | integer | Currency ID # |
| {{transaction.currency_symbol}} | string | Currency symbol |
| {{transaction.currency_iso4217}} | string | Currency ISO 4217 code |
| {{transaction.amount}} | float | Total transaction amount (refunds will be negative) |
| {{transaction.fee}} | float | Transaction fee (if gateway provides this data) |
| {{transaction.applied}} | float | Amount that is applied to invoices |
| {{transaction.unapplied}} | float | Amount that is unapplied (not applied to any invoices) |
| {{transaction.transaction_date}} | date | Date of the transaction |
| {{transaction.transaction_status_name}} | string | Human-friendly transaction status |
| {{transaction.transaction_status_str}} | string | Status string |
| {{transaction.transaction_status_state}} | string | Status code |
| {{transaction.transaction_type}} | string | Transaction type (one of: pay, ref, cre, spl) |
| {{transaction.transaction_type_name}} | string | Transaction type name |
| {{transaction.transaction_method}} | string | Transaction method |
| {{transaction.transaction_detail}} | string | Transaction details |
| {{transaction.transaction_datetime}} | datetime | Date/time of the transaction was created |
| {{transaction.transaction_ipaddr}} | string | IP address that created the transaction |
| {{transaction.void_datetime}} | datetime | Date/time the transaction was voided |
| {{transaction.url_self}}}} | string | URL for viewing the transaction in the GUI |
| {{transaction.applied_to}} | array | Information about how the payment is applied |
| {{transaction.custom_1}} | mixed | Custom field #1 |
| {{transaction.custom_2}} | mixed | Custom field #2 |
| {{transaction.custom_3}} | mixed | Custom field #3 |
| {{transaction.custom_4}} | mixed | Custom field #4 |
| {{transaction.custom_5}} | mixed | Custom field #5 |
| {{transaction.memo}} | string | Transaction memo |