Trying to issue the command:

EXEC AllCustomerAccounts_WS.AllCustomerAccounts_customer.getcustomer('<?xml version="1.0" encoding="UTF-8"?><customer_Input xmlns="http://www.metamatrix.com/account_Input"><customerid>CST01010</customerid></customer_Input>')

and getting:

14:01:29,316 WARN [PROCESSOR] Processing exception 'Could not parse query transformation for ALLCUSTOMERACCOUNTS_OUTPUT_VIEW.CUSTOMER_OUTPUTVIEW.MAPPINGCLASSES.CUSTOMER_OUTPUT_INSTANCE_1: null' for request SrNmZbySl22E.5. Exception type org.teiid.api.exception.query.QueryPlannerException thrown from org.teiid.query.parser.QueryParser.parseCommand(QueryParser.java:133). Enable more detailed logging to see the entire stacktrace.

It says its a warning, but no results are returned.