You need to know which version of the Adobe InDesign IDML document you are working with, for example because you need to:

• provide this information to the SDL support teams so that they can respond faster and check for known issues
• check against the supported version of Adobe InDesign document in the SDL application you are using
• check which Adobe InDesign version your customer/client/translator used

To retrieve this information, you need to:

• make sure you have WinZip, WinRAR, or a similiar (de-)compressing tool installed on your machine;
• deactivate the option Hide file extensions for known file types for your operating system (refer to this article for instructions);
• make sure you have a text editor installed like Notepad. This can be found in Start > All Programs > Accessories > Notepad.

Then use the following procedure:

1. Close Adobe InDesign on your machine.
2. Browse to your IDML document.
3. Highlight the document with one mouse click and press F2.
4. Rename the file type extension *.idml to *.zip and press Enter.
5. Extract the renamed document with either WinZip or WinRAR to a folder of your choice.
6. Go to the resulting folder.
7. Open your text editor and (usually) click on File > Open.
8. Browse to the extracted folder and open the file designmap.xml.
9. When the designmap.xml is open in the text editor, look for a field that looks like this example below:
   product="14.0.1"
10. Compare the number to the table below and you will know which version of Adobe InDesign was used. The release date might be relevant if an SDL product (for instance SDL Trados Studio or SDL WorldServer) supports a version (for instance InDesign CC), but Adobe released an update of that version after the SDL product was released. This means that that version could not have been tested in the SDL product - which might potentially - although rarely - lead to issue.

• Adobe InDesign CS4 = (6.x), first released in October 2008
• Adobe InDesign CS5 = (7.x) first released in April 2010
• Adobe InDesign CS5.5 = (7.5)
• Adobe InDesign CS6 = (8.x) first released in April 2012
• Adobe InDesign CC= (9.x) first released in January 2014
• Adobe InDesign CC 2014= (10.) June 2014;
• Adobe InDesign CC 2014.1= (10.1) October 2014
• Adobe InDesign CC 2014.2= (10.2) February 2014;
• Adobe InDesign CC 2015= (11.0)  June 2015
• Adobe InDesign CC 2015.1= (11.1)  August 2015
• Adobe InDesign CC 2015.2= (11.2)  November 2015
• Adobe InDesign CC 2015.4= (11.4)  June 2016
• Adobe InDesign CC 2017 = (12.0)  November 2016
• InDesign CC 2017.1 (12.1): 14 April 2017
• InDesign CC 2018 (13.0): October 18, 2017
• InDesign CC 2018 (13.0.1): November 2017
• InDesign CC 2018.1 (13.1): March 2018
• InDesign CC 2018.2 (13.2): March 2018
• InDesign CC 2019 (14.0.1): November 2018.
• InDesign CC 2019 (14.0.2): April 2019
• InDesign CC 2020 (15.x): October 2019
• InDesign CC 2020 (15.0.1): December 2019
• InDesign CC 2020 (15.1): June 2020
• InDesign CC 2020 (16.0): October 2020
• InDesign CC 2021 (16.1): January 2021