public void setMerchantCalculation(final String callbackMsg,
final String resultMsg, final Date startTime, final Date endTime) {
log.trace("Entering setMerchantCalculation");
SchemaValidator validator = new SchemaValidator();
SchemaValidationResult result = validator.validate(resultMsg);
boolean resultXMLValid = result.isXmlValid();
String validationMessage = "Merchant calculation results XML is valid.";
if (!resultXMLValid) {
validationMessage = "Merchant calculation results XML is not valid.\n";
validationMessage = validationMessage + result.getMessage();