Ginger Grant discusses Azure Data Factory errors:
Unfortunately, while developing Data Factory I became very familiar with errors. All of the errors show up at the end and provide very little insight as to what in the process failed. Here’s an example.
Database operation failed on server ‘Sink:DBName01.database.windows.net’ with SQL Error Number ‘40197’. Error message from database execution : The service has encountered an error processing your request. Please try again. Error code 4815. A severe error occurred on the current command. The results, if any, should be discarded.
This sounds like classic Microsoft error messages: “An error occurred. Here is a code you can put into Google and hope desperately that someone has already figured out the answer. Good luck!”