Title: Add Add-ons to a WordPress Hosting Order Using the API
PrimaryCategory: WordPress (CMS &amp; Hosting)
Type: Procedural
Tags: wordpress hosting, api, add-ons, cpu, ram, ip address, billing, invoice
Source UI Terms: auth-userid, api-key, order-id, addon, invoice-option, discount-amount
Source Reference: Add Add-ons to a WordPress Hosting Order Using the API

Prerequisites:
- You must have valid API credentials: auth-userid and api-key.
- You need the order ID of the existing WordPress hosting order.
- Determine which add-on(s) you want to add: cpu_1, ram_1, or ipaddress.
- Decide the invoice option for billing: NoInvoice, PayInvoice, KeepInvoice, or OnlyAdd.
- Optionally, prepare any discount amount to apply to the order.

Steps:
1) Use the HTTP POST method to send the API request.
2) Construct the API endpoint URL as:
   ```
   https://test.httpapi.com/restapi/product/wordpresshostingusa/order/{order-id}/addon
   ```
   replacing `{order-id}` with the actual order ID.
3) Include the following required parameters in the query string or POST body:
   - auth-userid: your integer user ID.
   - api-key: your API key string.
   - addon: one of &quot;cpu_1&quot;, &quot;ram_1&quot;, or &quot;ipaddress&quot;.
   - invoice-option: one of &quot;NoInvoice&quot;, &quot;PayInvoice&quot;, &quot;KeepInvoice&quot;, or &quot;OnlyAdd&quot;.
4) Optionally, include `discount-amount` as a float for applying a discount.
5) Send the request and await the response.
6) The response will contain a map of execution details for the add-on addition operation.

Warnings:
- Ensure you use the correct invoice-option value to control customer invoicing.
- Only supported add-ons (cpu_1, ram_1, ipaddress) can be added via this API call.

Summary:
This procedure explains how to add specific add-ons like CPU, RAM, or IP address to an existing WordPress hosting order via the API, including required parameters and billing options.

Evaluation Pairs:
Q: What API method and endpoint do I use to add an add-on to a WordPress hosting order?
A: Use the HTTP POST method on `https://test.httpapi.com/restapi/product/wordpresshostingusa/order/{order-id}/addon` with the required parameters.

Q: Which add-ons can I add to a WordPress hosting order using this API?
A: Supported add-ons are &quot;cpu_1&quot;, &quot;ram_1&quot;, and &quot;ipaddress&quot;.

Q: How do I control invoicing when adding an add-on?
A: Use the parameter `invoice-option` with values &quot;NoInvoice&quot;, &quot;PayInvoice&quot;, &quot;KeepInvoice&quot;, or &quot;OnlyAdd&quot; to decide how customer invoices are handled.

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<p>When you want to add add-ons to an existing WordPress hosting order. This article explains required parameters, supported add-ons like CPU, RAM, and IP, billing options, and example API requests to add add-ons.</p>
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<h2><a name="heading_0"></a>Description</h2>
<p>Adds the specified Add-on for an existing Wordpress Hosting Order.</p>
<h2><a name="heading_1"></a>Parameters</h2>
<table class="codetable"><tbody><tr><th colspan="1" rowspan="1">Name</th><th colspan="1" rowspan="1">Data Type</th><th colspan="1" rowspan="1">Required / Optional</th><th colspan="1" rowspan="1">Description</th></tr><tr><td colspan="1" rowspan="1">auth-userid</td><td colspan="1" rowspan="1">Integer</td><td colspan="1" rowspan="1">Required</td><td colspan="1" rowspan="1">Authentication Parameter</td></tr><tr><td colspan="1" rowspan="1">api-key</td><td colspan="1" rowspan="1">String</td><td colspan="1" rowspan="1">Required</td><td colspan="1" rowspan="1">Authentication Parameter</td></tr><tr><td colspan="1" rowspan="1">order-id</td><td colspan="1" rowspan="1">Integer</td><td colspan="1" rowspan="1">Required</td><td colspan="1" rowspan="1">Order ID of the Order for which the specified Add-on(s) is/are to be added</td></tr><tr><td colspan="1" rowspan="1">addon</td><td colspan="1" rowspan="1">String</td><td colspan="1" rowspan="1">Required</td><td colspan="1" rowspan="1">Add-ons can be one of the following:
<ul><li><em>cpu_1</em></li><li><em>ram_1</em></li><li><em>ipaddress</em></li></ul>
</td></tr><tr><td colspan="1" rowspan="1">invoice-option</td><td colspan="1" rowspan="1">String</td><td colspan="1" rowspan="1">Required</td><td colspan="1" rowspan="1">This parameter will decide how the Customer Invoices will be handled. Values can be: <em>NoInvoice</em>, <em>PayInvoice</em>, <em>KeepInvoice</em>, <em>OnlyAdd</em></td></tr><tr><td colspan="1" rowspan="1">discount-amount</td><td colspan="1" rowspan="1">Float</td><td colspan="1" rowspan="1">Optional</td><td colspan="1" rowspan="1">Discount amount for the order value.</td></tr></tbody></table>
<h2><a name="heading_2"></a>HTTP Method</h2>
<p>POST</p>
<h2><a name="heading_3"></a>Example Test URL Request</h2>
<p><code>https://test.httpapi.com/restapi/product/wordpresshostingusa/order/{order-id}/addon?auth-userid=0&amp;api-key=key&amp;addon=cpu_1&amp;invoice-option=NoInvoice&amp;discount-amount=0.00 </code></p>
<h2><a name="heading_4"></a>Response</h2>
<p>Returns a map of the execution details of the Renew operation.</p>
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When you want to add add-ons to an existing WordPress Hosting order using the API. This article explains supported add-ons, billing options, and API request details for add-on provisioning.

Name	Data Type	Required / Optional	Description
auth-userid	Integer	Required	Authentication Parameter
api-key	String	Required	Authentication Parameter
order-id	Integer	Required	Order ID of the Order for which the specified Add-on(s) is/are to be added
addon	String	Required	Add-ons can be one of the following: cpu_1 ram_1 ipaddress
invoice-option	String	Required	This parameter will decide how the Customer Invoices will be handled. Values can be: NoInvoice, PayInvoice, KeepInvoice, OnlyAdd
discount-amount	Float	Optional	Discount amount for the order value.