# UAObjecttype already declared

**URL:** <https://discourse.nodered.org/t/uaobjecttype-already-declared/8094>\
**Category:** General\
**Created:** [18 February 2019 08:44 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094 "2019-02-18T08:44:50Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![RajCh](https://avatars.discourse-cdn.com/v4/letter/r/eb8c5e/32.png) [@RajCh](https://discourse.nodered.org/u/RajCh)\
**Post date:** [18 February 2019 08:44 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094/1 "2019-02-18T08:44:50Z")

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![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/6/636522fdecd8cfc16ce5b41181fca8bb9574418f.png)

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [18 February 2019 09:03 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094/2 "2019-02-18T09:03:53Z")

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It looks like it is a problem with node-red-contrib-iiot-opcua. You might be better to raise an issue there.

> **[biancode/node-red-contrib-iiot-opcua](https://github.com/biancode/node-red-contrib-iiot-opcua/issues)**
>
> IIoT OPC UA toolbox package for Node-RED based on node-opcua. - biancode/node-red-contrib-iiot-opcua

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**Author:** ![RoganFPS](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/roganfps/32/3208_2.png) [@RoganFPS](https://discourse.nodered.org/u/RoganFPS)\
**Post date:** [18 February 2019 09:59 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094/3 "2019-02-18T09:59:27Z")

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Are you trying to monitor/read the same tag multiple times?

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**Author:** ![RajCh](https://avatars.discourse-cdn.com/v4/letter/r/eb8c5e/32.png) [@RajCh](https://discourse.nodered.org/u/RajCh)\
**Post date:** [18 February 2019 12:54 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094/4 "2019-02-18T12:54:18Z")

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Hallo,  
No, I just imported my XML file (OPC UA data model) into Node-RED and could see the nodes as node js objects. For the first time, it was successful. When i shut and restarted the server of the node red, its showing the error.

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**Author:** ![RajCh](https://avatars.discourse-cdn.com/v4/letter/r/eb8c5e/32.png) [@RajCh](https://discourse.nodered.org/u/RajCh)\
**Post date:** [18 February 2019 12:55 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094/5 "2019-02-18T12:55:14Z")

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Thank you very much, will do that.

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**Author:** ![RajCh](https://avatars.discourse-cdn.com/v4/letter/r/eb8c5e/32.png) [@RajCh](https://discourse.nodered.org/u/RajCh)\
**Post date:** [18 February 2019 22:16 UTC](https://discourse.nodered.org/t/uaobjecttype-already-declared/8094/6 "2019-02-18T22:16:43Z")

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I have resolved this issue. There was a problem installing the npm directories, I uninstalled completely and re-install,now everything works fine.