Substitutions provide a solution for template-free substitution of field values built on top of setters. They enable substituting values into part of a field, including combining multiple setters into a single value.
See the creating substitutions guide for more info on creating substitutions.
The created substitutions can be deleted using
# delete a substitution image-tag kpt cfg delete-subst DIR/ image-tag
kpt cfg delete-subst DIR NAME DIR: Path to a package directory NAME: The name of the substitution to delete. e.g. image-tag
--recurse-subpackages, -R Delete substitution recursively in all the nested subpackages