I am trying to read a nested json file and flatten it using dataflow but getting below error.
Attaching the source json file
185160-sample-nested-json.txt
My DataFLow :
1) Source Activity : 
Able to preview Data Correctly : 
2) Flatten Activity :

While trying to preview data getting below error : 
Error Message : com.microsoft.dataflow.broker.InvalidOperationException: DSL compilation failed: DF-DSL-001 - DSL stream has parsing errors
Line 21 Position 34: no viable alternative at input 'unroll(Technical Descriptions' - RunId: c4d64d1a-f591-47d1-ae47-3d11d039ce08
Attaching DataFlow Script : 185222-dataflow-script.txt
please can someone replicate the scenario and check where I am going wrong




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