# IMeetingService::Start() always return SDKERR\_SUCCESS even using empty params

**URL:** <https://devforum.zoom.us/t/imeetingservice-start-always-return-sdkerr-success-even-using-empty-params/1290>\
**Category:** Windows\
**Created:** [May 18, 2018, 10:42am UTC](https://devforum.zoom.us/t/imeetingservice-start-always-return-sdkerr-success-even-using-empty-params/1290 "2018-05-18T10:42:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Rex\_Wang](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rex_wang/32/1157_2.png) [@Rex\_Wang](https://devforum.zoom.us/u/Rex_Wang)\
**Post date:** [May 18, 2018, 10:42am UTC](https://devforum.zoom.us/t/imeetingservice-start-always-return-sdkerr-success-even-using-empty-params/1290/1 "2018-05-18T10:42:09Z")

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ZOOM\_SDK\_NAMESPACE::StartParam startParam;  
startParam.userType = ZOOM\_SDK\_NAMESPACE::SDK\_UT\_APIUSER;  
ZOOM\_SDK\_NAMESPACE::StartParam4APIUser& apiuserParam = startParam.param.apiuserStart;  
apiuserParam.userID = m\_zoomId.c\_str();&nbsp;  
apiuserParam.userToken = m\_zoomToken.c\_str();  
apiuserParam.meetingNumber = \_wtoi64(m\_strMeetingNumber.c\_str());  
apiuserParam.userName = m\_zoomName.c\_str();  
SDKError error = m\_pMeetingServiceMgr-\>Start(startParam);

Here, when the userID, userToken, userName were all invalid values, I still got&nbsp;SDKERR\_SUCCESS.

Definitely I can’t enter the meeting room, however the result of Start() confuses me.

Can you please double confirm this?

Thanks,

&nbsp;

&nbsp;

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<div class="post-metadata">

**Author:** ![TimZoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/timzoom/32/978_2.png) [@TimZoom](https://devforum.zoom.us/u/TimZoom)\
**Post date:** [January 18, 2019, 9:23pm UTC](https://devforum.zoom.us/t/imeetingservice-start-always-return-sdkerr-success-even-using-empty-params/1290/2 "2019-01-18T21:23:16Z")

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Closed on January 18, 2019, 9:23pm UTC