IDES opens for testing from Monday, June 1, 2015 at 12:00 PM EDT to
Monday, June 8, 2015 at 12:00 PM EDT (UTC/GMT-4). The test
session will be open to users that have completed IDES enrollment by Thursday,
May 28, 2015 at 5:00 PM EDT.
Note: Use test data only. The test files should not contain
any production data or personally identifiable information, such as a valid
taxpayer number, account number, or social security number.
Any production files submitted to the test environment will not be
processed. Do not submit production files to the test environment or test
files to the production environment.