Data 360: Error "Unable to deploy the data stream, please try again." when creating Google Cloud Storage data stream

• Ensure that you have configured the correct bucket permissions for all objects you are attempting to access. See Google Cloud Storage Bucket Permissions for Customer Data 360 for details on the recommended settings.
• Do not attempt to ingest files containing more than 1000 columns of data. This is the known upper limit for a files fields that GCS data stream can read.
• If you are ingesting a file that is headerless, ensure that the first row of data in the file contains a value for all columns. It is recommended to add column headers to your files to avoid errors during data stream creation if the first row of data needs to include empty values for some columns.
• Data Streams have a limit of 500 mapped fields. 

Note: If your are configuring a data stream with a File Name that uses a wildcard (e.g. *.csv) you will need to check all files in the directory to confirm if any files breach the limit of 1000 columns or contain empty value in the first row of data, if using headerless files.