| UUID | uuid | string | | Universally Unique Identifier. |
| Index | i | integer | | Line number within the parent document (automatically calculated) |
| Refund | refund | boolean | | Indicates whether this payment is a refund of a previous payment, effectively reversing the flow of funds between the supplier and customer or their representatives. |
| Document | document | org.DocumentRef | | Reference to the document being paid |
| Installment | installment | integer | | When making multiple payments for a single document, this specifies the installment number for this payment line. |
| Description | description | string | | Additional human readable description of the payment line which may be useful for explaining the purpose or special conditions. Notes should be used for more formal comments. |
| Payable | payable | num.Amount | | Payable reflects the amount of the document that is payable. This will be calculated from the embedded document’s amount automatically and converted to the currency of the document. |
| Advances | advances | num.Amount | | Amount already paid in previous installments, which may be required by some tax regimes or specific use cases. |
| Amount | amount | num.Amount | true | Amount of the total payment allocated to the referenced document. |
| Due | due | num.Amount | | Due reflects how much still needs to be paid |
| Tax | tax | tax.Total | | Tax contains a breakdown of the taxes that will be applied to this payment line after taking into account currency conversion and the relative amounts. |
| Notes | notes | array of org.Note | | Additional notes specific to this line item for clarification purposes |
