Just for information, if someone like to learn how to use the SORTFIELD when adding labels.

Usually - if exist - the FLO-ID or Farmnumber is written in the SORTFIELD. But in 99% of our labels in the catalog it is empty. The default sort order by country, PLU, shape and year of issue is good enough.

Here, the idea is to sort the labels by 1.) country and then by 2.) certification like BCS, CERES, CUC, QCS in alphabetical order. This combination is unusual. When I put only the name of the certification in the sort field, then the catalog sorts by certification following by country. This would be wrong, because the sort field is the first attribute to sort the labels of a catalog entry. So I add the country name + certification in the sortfield (i.e. 'EC BCS') that way the country name is element and the labels are sorted by country + certification name.

You can now compare the colour differences, because they are next to each other.