Use the product requirements editor (PREd) to change your real-time forecast data requirements

What is the product requirements editor?

The Product Requirements Editor (PREd) is a web application for the configuration and maintenance of real-time dissemination requirements.

The PREd is available to the following real-time data users:

Access the product requirements editor

Access the web application, using your username and password, via the following link : https://apps.ecmwf.int/products/requirements/


The PREd consists of the following components:











Bug fix & new features:

  • An improved diff tool (faster to render)
  • Addition of announcements regarding 47r1 implementation
  • Users can now revert requirements to previous operational versions


Bug fix: 'jumpy' code editor has now been fixed.

If you notice any issues, please report to servicedesk@ecmwf.int


Enhanced volume reporting:

  • Users can see their estimated volume based on their requirements, the volume of data produced for dissemination and the final volume of data dissemination.


  • Bug fix: Member/Co-operating State users can now create new feeds

  • Users can see who last modified the requirements with the addition of the 'Modified by' column on the destination page and in the version history. 

    Please note that the first version of all feeds (that have not yet been modified in the PREd) will show the name of an ECMWF colleague that loaded all requirements into the application.




  • Improved volume reporting
  • Graphs to provide daily volume reports
  • Dynamic requirement pick-up times