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The ECSS-E-40 Tailoring Tool Wizard
What is a tailoring?
The ECSS-E40-Part 1B standard defines a set of requirements for developing software in the scope of a space system project. It was defined by the European Cooperation for Space Standardization committee. But because these requirements cover a wide range of applications, some of them may not be applicable for small, low-cost projects. The selection process of the appropriate requirements for a particular project is called a tailoring. To be accurate, a tailoring must follow a certain number of rules and generally has to be done with the help of a standard expert. The Tailoring Tool Wizard, developed by the BSSC is a tool assistant that helps a project manager to do most of this task himself. This tool implements pre-defined tailoring guidelines.
How does it work?
  • The technology behind the E40 Tailoring Tool is a generic engine that handles form analysis.

  • At startup, the tool downloads a set of questions and rules in order to process the tailoring;

  • The user answers to the questions and the tool determines the applicable E40 requirements;

  • The generated report contains also a list of required documentation for each phase of the project;

  • A tailoring justification is produced using inputs on project characteristics and risk assessment.

How to get it?
The Tailoring Tool Wizard can be downloaded for free from the right menu, a license agreement is included in the installer (latest version is
How to get support?
To get help with your E40 tailoring please contact bssc @ (remove the blanks).
Can I use the Tailoring Tool Wizard to tailor my own standard?
Yes! The techology used by the Tailoring Tool Wizard is a generic and very flexible engine that can handle many kinds of questionnaires. The questions and rules to generate the report are expressed in a structured ASN.1/XML-encoded document that is automatically processed by the tool. For more information on how to write your own questionnaire, please contact bssc @ (remove the blanks)
Warranty and Disclaimer of Warranty
Although every attempt has been made to ensure the correctness of this tool, it is provided "AS IS" and WITHOUT WARRANTY, either express or implied, including, without limitation, the warranties of NON-INFRINGEMENT, MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY OF THIS SOFTWARE IS WITH THE USER.

Limitation of Liability. Under no circumstances and under no legal theory, whether in tort (including negligence), contract, or otherwise, shall the provider be liable to any person for any direct, indirect, special, incidental, or consequential damages of any character arising as a result of the use of this tool including, without limitation, damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses.
Last update: 22 August 2006

More information
ECSS-E-40 Tailoring guidelines (pdf)Tailoring tool sample reportTailoring tool license (txt)Tailoring tool download (exe)
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