Hardcode values for PPL too.

Subscription Item typoes (like Hosting Subscription) are not supported as
explanation passed to builder.

Instead just generate Applied Rule path globbing passed to builder.

Do not try to edit if not needed.

Invoices has no causality.

Inner joins can return duplicate lines in some cases.

Do small batches.

Additionally lower registration priority in order to minimise duplicates.

Also make activity per person.

Source and destination have to be defined (also for section).
Source and destination have to be different (also for section).

Source and destination have to be defined (also for section).
Source and destination have to be different (also for section).