user query: SOAP Error handling

Hello, Is this group a development group, or are end-user questions also welcome here? I need to find out what is the preferred way of doing error handling if the function i am calling generates an error. Should i be generating a soap fault, or roll my own error handling. Currently i am returning an array like this from my server function: return array($returnvalue, $error); and checking the $error element of the array in my soap client. Thanks again, John