When upgrading a production model from 7.7 to 7.9 it wishes to alter types of some columns.
These are missing the TYPE keyword on the column name and this prevents production model from validating.
In my case the corrected statements were:
ALTER TABLE REC_ProdItemValue ALTER COLUMN “Name” TYPE varchar(255 )
ALTER TABLE REC_SubProdItemValue ALTER COLUMN “Value” TYPE varchar (1024 )
ALTER TABLE REC_RecipeValue ALTER COLUMN “Value” TYPE varchar (1024 )
ALTER TABLE REC_ChangeLog ALTER COLUMN “FromValue” TYPE varchar (1024 )
ALTER TABLE REC_ChangeLog ALTER COLUMN “ToValue” TYPE varchar (1024 )
On postgres 9.5.3