I had run transformation giving me error for Duplicate node externalIds for space 'PDM'
even after deleting all the data from the model for space PDM still giving the same error, I also verified by api still there is no data still giving the error for Duplicate node externalIds for space 'PDM' .
![](https://uploads-eu-west-1.insided.com/cognite-en/attachment/23d2eab7-bccf-4309-bba1-2e9d917d798e.png)
Best answer by Anders Hafreager
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