Hi
UAT is testing system? If yes.
Normally once it’s complete development in the BO Dev system and move to testing BO system, only universe connection need to change pointing in testing BO system to Testing back-end server. So no need to change the schema and table names.
UAT is testing system? If NO
If you want to chang filed definition like:
Material NO= ABC.dbName_DEV.TableName.Material to "ABC.dbName_UAT.TableName".Material
In the definition directly you can select the schema, table and filed name.