int msWCSException11(mapObj *map, const char *locator, const char *exceptionCode, const char *version)
return msWCSException11( map, code, locator, version );
That means exceptionCode and locator are switched.
At least in 6.0.3 and current master.
Adjusting expected results for mapserver/mapserver#4388
Correcting and harmonizing exceptionCode and locator usage in WCS (#4388
some things need time... sorry for not handling earlier