# XChangeIT



# EDI File Extensions

<table border="1" id="bkmrk-extension-type-.ddo-" style="border-collapse: collapse; width: 100%;"><colgroup><col style="width: 50%;"></col><col style="width: 50%;"></col></colgroup><tbody><tr><td class="align-center">Extension  
</td><td class="align-center">Type  
</td></tr><tr><td>.ddo</td><td>Invoice file ready for loading (single invoice only)</td></tr><tr><td>.dd2</td><td>Invoice file ready for loading (can support multiple invoices in one file)</td></tr><tr><td>.rtf</td><td>Return file ready for loading</td></tr><tr><td>.rtd</td><td>Return file that has been processed and will be transferred back to XChangeIT</td></tr><tr><td>.bak</td><td>A ddo,dd2 or rtf file that has been loaded into Computerlink</td></tr></tbody></table>

NOTE: Nothing is changed in a ddo, dd2 or rtf file in the process of loading into Computerlink. This enables these files to be easily reloaded by changing the .bak file extension to the original extension.

# XchangeIT Client Installation

These instructions come from the [March 2015 XChangeIT Step by Step Installation Guide](https://www.xchangeit.com.au/getdoc/3d6e9161-1dc5-4bc4-96d3-acdc9a7ea3e5/XchangeIT_STEP-by-step---updated-31-march-2015.aspx)

- [ ] Go to [the XChangeIT website](http://www.xchangeit.com.au).
- [ ] Click **Login for Existing Members**
- [ ] Enter your **username** and **password**
- [ ] Select **Account Maintenance**
- [ ] Select **Newsagent Client**
- [ ] Click on **Download Client**
- [ ] Click on **Install** <span style="color: rgb(224, 62, 45);">Please note:</span>
    - <span style="color: rgb(224, 62, 45);">XChangeIT no longer supports Windows 2000, XP &amp; Vista</span>
    - <span style="color: rgb(224, 62, 45);">XChangeIT Link requires a minimum of Microsoft .NET Framework Version 3.5</span>
- [ ]
- [ ] Click **Run** Installation begins
- [ ] Click **Install**
- [ ] You will now see the installation progress screen.
- [ ] You will then see the initializing screen.
- [ ] Click **OK**
- [ ] **Check your email for a Security Token.**
- [ ] Enter your **XchangeIT Account number** in to the <span style="text-decoration: underline;">Store number</span> field
- [ ] Enter your **Security Token** in to the Security Token field
- [ ] Click **Activate**
- [ ] Click **OK** to start using XchangeIT Client

##### Congratulations, the installation is complete.