The AGS constants are used to give a heading in the ASG a constant value.
To add a constant, you need to go into the Sheets designer and the AGS Mapping. There are two tabs in the AGS mapping one for the mapping as normal and one for the constants.
For this example, we are adding the GCHM code, type and units for the loss on ignition test. We have selected the correct headings and put the values which we would like to have.
When you produce the AGS the values for LOI will be put for each test against the GCHM_CODE. The same will apply for all the contents you select.