You have adapted an user interface (UI) screen by adding an extension field via adaptation mode, which is part of the Key User Tools (KUT) functionality.
Once you have used Transport Management to move this field from one system to another, you notice that the extension field is not visible in the UI from the other system.
- SAP Cloud for Customer
If the Transport Request did not fail, then start the Adaption mode in the UI of the target system and check that the field exists in the system and needs to added to the screen manually.
For Transport Request failure, please check the KBA: 2949492 - How to find Log Information for a Transport Request
Request, UTM , KBA , BC-DWB-REP-EXT , Extensibility , LOD-LE-UTM , Unified Transport Management , How To