DM-DLV-0070 Delivery 'xxx': the column 'period' (delivery element 'period') does not exist in the destination table

Solution - your delivery element must match your column name including Case. This is a bug since rdbms are not case sensitive.

Image 1 and 2. Delivery Properties will allow you to import the target table column names

Image 3. Right Click and do Target Column Check on the build to check you match the case.