Encoded by and Encoder settings (2021)

I've searched high and low to resolve an issue. In another program I can see the text for the field "Encoder:" see screenshot

I checked the link you provided in previous post, very useful thanks, but not able to find anything here as per screenshot


Source: Tag Field Mappings – Mp3tag Documentation

I found another link provided from support


Source: Tag Mapping - Hydrogenaudio Knowledgebase

Here I see "Encoder" but don't have a clue where to start. Please advise.

If the field is treated by MP3tag and can be edited by MP3tag then you find it in the extended tags dialogue (Alt-T).
Not all properties can be edited by MP3tag. Such properties are usually addressed in MP3tag by variables starting with an underscore, e.g. %_tool%.
You find a list of read-only properties and their variables in the help on export:
https://docs.mp3tag.de/export

If you provide a DL link to your example song, we can have a look what kind of tag this could be.
You can send it by PM, if you prefer.

Thank you. Thanks to your ALT+T I was able to navigate through the changes.

Thank you. Was able to resolve it with ohrenkino's suggestions.

And what was the tag name or change you did?