Travel agencies, tour operators, and DMCs run their business across quotation spreadsheets, WhatsApp threads, and a booking calendar that lives in someone's head. ERPNext core gives you Quotation, Sales Invoice, Payment Entry, and Supplier out of the box, but it has no concept of a tour package with day-by-day itinerary segments, no traveler-level passenger records, no per-service supplier cost buildup (hotel + airline + transport + guide), and no voucher documents to hand a client at departure. So teams end up rebuilding a package quote by hand every enquiry season, losing the markup math, and reconciling supplier payments long after the group has flown.

ECOSIRE builds a proper Frappe app (its own module inside your ERPNext, not a pile of custom fields) that models how a travel business actually operates. We add DocTypes such as Tour Package, Package Itinerary Day (child table), Travel Booking, Traveler/Passenger (child table), and Supplier Service Cost, each with the workflow states, permissions, and print formats your team needs. A booking captures the travelers, the selected package or a custom itinerary, and the underlying supplier services; server-side logic in hooks.py doc events (validate, on_submit) rolls supplier costs up into a sell price with your configured markup, blocks over-capacity or date-conflicting bookings, and on submit generates the downstream Sales Invoice and payment schedule automatically.

Technically, the app leans on the Frappe framework rather than fighting it. Cost-and-markup and availability rules run as server scripts and controller methods so they hold no matter whether a booking is created in the Desk UI, imported, or pushed through the REST API. Whitelisted methods (@frappe.whitelist()) expose booking creation and quote generation to your website or a partner portal, and the standard Frappe REST API (/api/resource/Travel Booking) lets you integrate a booking engine or GDS feed. Voucher and quotation PDFs come from Frappe Print Formats (Jinja), multi-currency invoicing uses ERPNext's native currency and exchange-rate handling so you can buy in USD/EUR and bill the client in their currency, and scheduler events send itinerary reminders and flag unpaid supplier balances before departure. Role profiles and permission rules keep counter staff, operations, and finance in their own lanes. Everything targets ERPNext/Frappe v15 and v16.

Because this is build-to-order, nothing ships as an instant download. After a short scoping call we confirm exactly which DocTypes, states, costing rules, and print formats your operation needs, then build and unit-test the app against your version. Typical delivery is 2-4 weeks from confirmed scope, depending on how much of the itinerary, supplier-costing, and integration surface you want in the first release. We deploy to a staging site for your UAT, then install on production with a rollback plan and hand over the git repository so the code is yours.