The Sandbox Electronic Test Site (ETS) provides a facility where companies/vendors can check the basic construction of eTariff XML files. The Sandbox provides the basic types of data checks that the Commission performs and provides the error messages generated in the eTariff system.

A Test tariff filing should be submitted the addresses listed below. Files submitted have no naming restrictions but must have a .zip as the extension.

Commission eTariff sandbox website portal at:

Click  on the link and at the portal you will be instructed to:

  • Click on the Choose File button to select your zipped test file.
  • Click the Upload button to upload and check your test filing.
  • The return email must be specified in the <validation_email> tag in the XML file.

Note: that this system does not retain data. However, if a valid company identifier is used and the filing uses a valid Tariff Identifier established in the Production account, then the company can make all categories of Test Tariff Filings that are appropriate based on the tariff status in the Production database. The Sandbox serves the role of helping companies/vendors ensure they are constructing their XML files correctly, with the expected values for specific data elements.

Be advised that since the ETS is intended only as a test tool, information sent to it will be considered available for public disclosure under 18 C.F.R. Part 388 and requests for confidential treatment of such information will not be considered. If actual tariff filing data is included in the test XML files, the data should not be above the security access level of "Public."

To report any problems with testing the new web portal or for more information, contact the eTariff Advisory Staff at 202-502-6501 or

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This page was last updated on June 15, 2022