SQL 2012: Executed generated DB script in SQL 2008 R2
This is a warning message that comes up due to a missing dependency (it also means that the SQL dependency tree may not be correctly set, and so you won't have correct entries in sys.sql_expression_dependencies which can be useful down the road). This is just a warning however, and so long as the dependent object is created you will have no issues with running your code. 

You can also repush the items you get warnings on, and that will fix the dependency list, but again, not critical.