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Can't save Dataflow due to internal error



I've added some columns to an existing dataflow (based on Google Analytics).

In the preview everything looks fine, the columns are added and data is retrieved without issues.

Now, when I try to save I get an internal error without detailed information.

If I restart my browser I can see the 'old' entity field name and type, but when I go to 'edit entity' the new columns are still there...


Any idea what may be wrong ? 


Something went wrong
Could not perform this operation due to an internal error
Please try again later or contact support. If you contact support, please provide these details.
Activity ID: 32a8824f-44e4-4dc4-a460-5190aff59e3d
Request ID: 35587fdb-0ad9-3f67-a7d1-bbd422e77c12
Correlation ID: 01196a99-d72b-e816-9788-2b620f4cfa6a
Status code: 500
Time: Mon Sep 16 2019 15:45:04 GMT+0200 (Central European Summer Time)
Version: 13.0.10668.164
Cluster URI:


Kind Regards,


Status: New

Hi @Cruz3r


From internal trace, I found the exception "Exception object created: Microsoft.PowerBI.Cdsa.Common.ObjectModelTypeNotSupportedException: ToAttributeDataType received unsupported mashup type column: 'Duration'".  Please go to dataflow edit mode and correct the issue with the column Duration. 


Best Regards,
Qiuyun Yu


Hi @v-qiuyu-msft ,


You're right, i had 1 column with a type duration passed by the GA connector.

After transforming that column to a value in Total Seconds the issue is gone.

Strange, but ok Smiley Happy


Btw, is there a way to retrieve these traces via the dataflows GUI ? 




Best Regards,