This will work if you define a sequence in SQL Server. (2014+). Then select the sequence in the mapping (instead of SCOPE_IDENTITY).
If you use model first, you can let the designer create the sequences and automap them for you. Make sure you have the following Project settings in the llblgen pro designer set to the following values:
Entity Model -> Model First Development -> Prefer system sequences over schema sequences if applicable
set to FALSE (so unchecked)
and
Entity Model -> General -> Auto assign sequences to integer pks
set to TRUE (so checked)
If you're using database first, you have to define the sequences in the database schema. In that case, define them using a pattern, and make sure the pattern matches the setting Entity Model -> Database First Development -> Sequence name matching pattern.