# Invoice Endpoint

This notification will occur when a modification to an invoice occurs. This includes when payments are applied against an invoice.

* Invoice is created
* Invoice is updated
* Payment is applied to invoice

## Invoice is created.

### Subject

InvoiceAdded

### Body

```json
{
    "data": {... JSON Response from getInvoice API }
}
```

## Invoice is updated.

### Subject

InvoiceUpdated

### Body

```json
{
    "data": {... JSON Response from getInvoice API },
    "previousData": {... Previous Data in JSON which has been just updated }
}
```

## Payment is applied to invoice

### Subject

InvoiceUpdated

### Body

```json
{
    "data": {... JSON Response from getInvoice API },
    "previousData": {... Previous Data in JSON which has been just updated }
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developer.ivvy.com/notifications/payments-endpoint.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.