Train Segment in Invoice

Whatever becomes invoiced (segment, service) is related to exact product name and its settings.
‘Products’ list and settings are defined in: Tools → Products.

Any product can be selected as a train and linked to corresponding segment type in: Tools → Company Settings → Products: ‘Rail’ property.

Invoice template is generated based on 'Invoice' form data:

Issue invoices based on segments for:

• clear accounting and statistics control;
• standard report labels and line format.

Useful Links
Invoice Issue

Filter out which exact information among the transferred from PNR should be displayed for all invoices issued after the change:
Tools → Company Settings → Invoicing → InvoiceLineFormatTRN