Hello. Could someone please explain how the SUM ALL property works? In every report I have made, I cannot get the correct answers. My question is: Is the SUM ALL field dependant on what you have as your data source, or how many different data sources are linked? I am *very new to Axapta so I am sorry if this question is simple. If there are any websies or materials I should read about SUMs and calculated fields, please let me know as I need to be able to teach myself and have a reference guide for the future. Thanks, Simon Batchelder