XML-code

Hello dear friends,
one of the actions is to send XML code (plain text) to a systemsoftware. However, the entered code changes automatically on a regular basis.
The code entered in text format:
<! -? xml version = “1.0” encoding = “UTF-8”? ->
1.0
[date-1]
[date-2]
[……]
[……]
[…..]
[…..]
[…..] [……]
[…….] [……]
Apparently this always happens when the “Actions” tab is clicked without changes being saved.
How can I prevent this?