Related JIRA Tasks: PROT-190 AD-58
You can access data on related records by going one level deeper with the dot syntax used in free marker interpolations. Related records are identified by List/records field.
It is not possible to return some related records in a direct manner the related entity is always supported, as are some other related records fields. The subsidiary related record is supported but only through the top-level subsidiary data source not through the record. Subsidiary related records in some sublists are not directly supported like when we call join from item line in any transaction record.