A distribution company moves goods, documents and money simultaneously. When the warehouse runs on one system, orders on another and invoicing on a third, picking errors and delivery delays become the invisible cost that no spreadsheet ever fully captures. We implement ERP with an integrated WMS module that unifies the warehouse, delivery routes, supplier management and invoicing on a single platform.
The distribution sector in Spain operates under a combined pressure of tight margins, growing logistics demands and new tax obligations. Royal Decree-Law 15/2025 makes Verifactu mandatory from 1 January 2027 for companies (and from 1 July 2027 for the self-employed and other businesses): every delivery note converted into an invoice must carry a high-integrity record, a verifiable QR code and be available to the Tax Agency in real time. A distribution company that generates hundreds of delivery notes per day cannot comply with that using invoicing software disconnected from the warehouse; it needs an ERP where the warehouse-despatch-invoicing flow is a single, traceable process.
Law 18/2022 on Business Creation and Growth requires any company invoicing other businesses or public administrations to issue structured electronic invoices. Royal Decree 238/2026, published in the Official State Gazette in March 2026, develops the Spanish B2B electronic invoicing system and sets the deadlines: companies with annual turnover exceeding 8 million euros, from 1 October 2027; all other businesses and self-employed professionals, from 1 October 2028. For a wholesale distributor, this means the ERP must be able to generate and receive electronic invoices in FacturaE or Peppol BIS format, integrate them with the customer's systems and archive them in an auditable way. What until recently seemed an advanced option is now a legal obligation with a defined timetable.
Beyond regulatory compliance, the central challenge in distribution is the operational efficiency of the warehouse. A poorly configured WMS creates phantom locations, inefficient picking routes and despatch errors that are only detected once the customer has already received the wrong goods. When we implement the ERP with the warehouse management module, we define the location strategy, replenishment rules, inbound and outbound flows, and picking routes optimised for the client's volume and product type. The goal is to reduce the time between order receipt and truck loading, and to eliminate despatch incidents that generate returns and handling costs.
We analyse the current operation: warehouse layout, product reference types, daily order volume, delivery routes and friction points. We identify the risks of non-compliance with Verifactu and future B2B electronic invoicing, and quantify the cost of picking and despatch errors before proposing any solution.
We select the platform and modules appropriate to the size and distribution model: single or multi-warehouse, channel or B2C sales, own routes or transport agencies. We define the location strategy, automatic replenishment rules and integration with purchasing, sales and accounting modules.
We migrate the product catalogue, suppliers, customers and price lists. We configure the warehouse's physical locations in the system, lot traceability rules and despatch documents with Verifactu. We train the warehouse, commercial administration and accounting teams so that go-live runs smoothly.
We support the parallel run alongside the previous system during the stabilisation period. We then activate periodic follow-up: regulatory updates (Verifactu, electronic invoicing), adjustments to warehouse rules and system evolution as the company grows or adds new product lines or warehouses.
The operational detail: what we deliver as part of the work and what we keep alive afterwards.
Integrated warehouse management (WMS)
Location control, goods receipts with supplier delivery note processing, picking strategy (FIFO, FEFO, by zone), order preparation with paper lists or radio-frequency terminals, and despatch with delivery documentation. All in real time without leaving the ERP.
Verifactu and electronic invoice billing
Automatic invoice generation with high-integrity records, verifiable QR codes and submission to the Tax Agency in line with the mandatory calendar under Royal Decree-Law 15/2025. Preparation for the future mandatory structured B2B electronic invoice (FacturaE, Peppol BIS) derived from Law 18/2022.
Lot and expiry date traceability
Recording of lot number, expiry date and supplier for every stock movement, from receipt to despatch. Essential for food, pharmaceutical or regulated-product distributors that must respond to upstream or downstream traceability enquiries in real time.
Route management and delivery sheets
Distribution route planning with order assignment by zone, vehicle and driver. Digital delivery sheet with delivery confirmation, in-route returns management and automatic reconciliation with the day's invoicing.
B2B customer order portal
A private area where wholesale customers view their catalogue with personalised pricing, place orders, check shipment status and download delivery notes and invoices. Reduces the workload of the sales team and accelerates the order cycle. For advanced deployment, see also the B2B customer portal service.
Integration with carriers and logistics platforms
Connection to the APIs of the main transport agencies (SEUR, MRW, DHL, Correos Express) for automatic label generation, shipment tracking and delivery status updates in the ERP without manual intervention.
A distribution ERP controls the physical flow of goods, but its value multiplies when combined with administrative process automation and predictive replenishment intelligence offered by other Grupo Summum divisions.
Full ERP adaptation to Verifactu and the forthcoming mandatory B2B electronic invoice, with native integration into the distribution company's management system.
View service → sistemasAutomation of repetitive logistics back-office tasks — replenishment orders, stock reports, stock-out alerts — with Power Automate connected to the ERP.
View service → iaPredictive demand models that anticipate which products, in what quantity and when need to be replenished, reducing capital tied up in stock and preventing inventory shortages.
View service →A standalone WMS (Warehouse Management System) manages only the warehouse: locations, movements and despatch. A distribution ERP integrates that functionality with customer order management, supplier purchasing, invoicing, accounting and delivery routes. For an SME distributor, the integrated solution is more efficient: it avoids data duplication between systems and ensures that stock, invoicing and accounting are always in sync.
Verifactu is the high-integrity record system that Royal Decree-Law 15/2025 requires for invoicing software in Spain. It mandates that every invoice issued carries an immutable record, a verifiable QR code and is available to the Tax Agency. For a distributor issuing tens or hundreds of invoices per day, the ERP must generate these records automatically; doing it manually or with non-compliant software carries a risk of penalties. The obligation takes effect on 1 January 2027 for companies and 1 July 2027 for everyone else.
It depends on the number of product references, the number of warehouses and whether the company has its own delivery routes. We regularly work with Odoo (very flexible, with an integrated WMS and reasonable licence costs for SMEs), Sage (robust in Spanish accounting and tax compliance) and a3ERP for companies already operating within the Wolters Kluwer ecosystem. The initial diagnosis lets us recommend the most suitable option with no commitment.
For a company with a single warehouse, up to 150 product references and standard picking processes, the project can be completed in eight to twelve weeks. For distributors with multiple warehouses, own routes and large catalogues, the project is structured in phases to avoid disrupting operations. We always carry out a supervised data migration and a parallel-run period before the final cut-over.
Yes. Lot, expiry date and supplier traceability is integrated into the WMS module of the ERPs we implement. Every stock movement — receipt, internal transfer, despatch — is recorded with the corresponding lot, allowing a rapid response to a product recall alert both downstream (which customers received it) and upstream (which supplier lot it came from).