I did several changes in the database in the past and apparently Developer doesn't update these details?!
I get almost 100 error like that:
Severity and Description Path Resource Location Creation Time Id
'epic->tbl_epc_invoices->cal_goods_total' column difference. (NUMBER(id:2), length: 19, allowNull: true) in DB <-> (NUMBER(id:7), length: 4, allowNull: true) in DB information file. The DB information on this column differs from the actual column in the DB. servoy_AG-Dev_resources/datasources/epic tbl_epc_invoices.dbi JSON file 1247643997674 66517
I tried to "Synchronize with DB Server information" and "Reload tables/table structure from DB" but I still had these errors.
So I have simply deleted that data servers from developer and created them again. But I still have these errors!