What is the Product Requirements Editor (PREd)

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

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

• ECMWF Member and Co-

  operating States

  operating States (ECMWF members)

• NMHS licence holders

• Maximum charge licence holders (under the old costing system) or users with the silver or gold service package (new service charge model)

Access to PREd is arranged as part of your real-time forecast data delivery set up.

After you have selected the data you require by browsing the ECMWF catalogue of real-time products. ​Your data is installed in the Product Requirements Editor (PREd)

Getting started with the Product Requirements Editor

Requirements are grouped in logical containers. At the top level we have the organisation.

Organisation contains 1 or more destinations , each representing a physical host. Destinations contain feeds. These are containers  where you will be able to see the editor and the dissemination requirements.

Create a draft from this page and edit it. A draft is your working canvas. 

If you want to install new data to test, please install your data in a test feed (that starts with T). If you would like to install your requirements in operations right away, you can install them in an operational feed.

You can install your data with the help of so-called snippets (<>), see below for more information about this tool.

By clicking on the bug symbol, you can check if your data configuration validates. The tools below can help you. 

If everything is alright, the bug turns green. You can then send in a publication request.

Helpful tools

• What it does: Provides users with a list of parameters that exist in the parameter database
• How to use: ctrl+space
• Example video: Autocomplete.mov
• Future enhancements:
  • search for ALL parameters by parameter ID
  • only display parameters that are valid in dissemination and valid for your current request (this is currently just a dump of all parameters from the parameter database)

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• What it does: Allows users to insert template requirements into their feed, which they can modify and use to build requests from scratch
• How to use: hover over the <> icon
• Example video: Snippets.mov
• Future enhancements: snippets for ALL datasets will be added prior to the first release

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• What it does: Displays differences between:
  1. the operational version of a feed and the amended version of that same feed
  2. the operational version and a previous operational version
  3. two previous operational versions
• How to use: select the 'view changes' action
• Example video: Diff.mov
• Future enhancements: add the option to save any changes that are made to the requirements while using the diff window

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Common validation errors

See common validation errors and how to solve them!

requirements are validated according to: 1) what's available and 2) which data you are permitted to access (not all customers pay to access the high-frequency products). Once the data has been installed, files are produced by the product generation system - you can review these files on the ECMWF Production Data Store (ECPDS)

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