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Customize the Attachment blocked message in a model-driven app

Currently in my setup I have movie file extensions blocked for attachments. (You can reach this setting by going to 

  • Settings > Advanced Settings
  • Settings > Administration
  • System Settings
  • General tab > Set blocked file extensions for attachments

In my model-driven app if the user tries to create a note in the timeline and attach a movie file they will receive this error message:

blocked error message-.png


I was wondering if there is any way to it customize this message? I am hoping to display more information to the user.




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