Revenue Conduit may get the following error when connecting to the Magento SOAP API:
SOAP extension is not loaded.
The Magento SOAP API requires the PHP SOAP Extension to be loaded in order to work. The SOAP extension can be enabled by editing the php.ini file if the extension is already installed *.
It's best to ask the company that hosts your web site to install the SOAP extension for you. If they can't do it, ask one of your developers who helps maintain the store.
* If the extension is not installed, it can be downloaded for free.