Check if the DAG is correctly defined, if the syntax is correct, and if notebooks are found in the workspace without actual execution. Details can be found in mssparkutils.notebook.help("validateDAG").
notebookutils.notebook.validateDAG(dag)check result
A list of notebook names or a complex data structure (JSON string) that meets the requirements of the com.microsoft.spark.notebook.msutils.impl.MsNotebookPipeline scala class.