onvif soap ptz AbsoluteMove error2

能获取到Capabilities和GetProfiles 不过AbsoluteMove 执行一直是soap error 2

ONVIF_SetAuthInfo(soap, USERNAME, PASSWORD);
result = soap_call___tptz__AbsoluteMove(soap,capa.PTZXAddr, NULL, &AbsoluteMove, &AbsoluteMoveResponse);
SOAP_CHECK_ERROR(result, soap, "AbsoluteMove");

log信息
[soap] AbsoluteMove error: 2, (null), (null)
detect end! It has detected 1 devices!
后面
我log 定位发现一直soap_get__tptz__AbsoluteMoveResponse(soap, tptz__AbsoluteMoveResponse, "tptz:AbsoluteMoveResponse", "
");后出错