Before exporting a given UserContext to PRIDE XML file, check if the MSI database need to be populated with spectrum details:

• After having created or opened an hEIDI project, open your MSI session but Don't forget to activate your hEIDI project.
• Check, in Windows Explorer, you have mapped a drive to the Mascot data folder (\\cp-mascot\data) and you are connected to that folder.
• Select a UserContext. It has to be grouped and saved to MSIdb.
• Select the menu MS Identifications→Database Update→Populate with spectra
• A dialog will appear on the screen to indicate if spectrum details are missing for this UserContext
• Check the Mascot data root path. You can use \\cp-mascot\data or the corresponding Drive Letter you have set up in Windows Explorer, for example Y:.

• If spectrum details are missing, click on Ok, populate MSIdb with missing spectra, else click on Do nothing & Close this window
• In case you have clicked Yes, a message will appear when process is finished