Wholesale software built around the actual processes of your business

Wholesale operations have specific characteristics that generic software rarely covers in a way that actually fits daily operations. Quotes that convert to pro-forma invoices, pro-forma invoices that become invoices, delivery notes tied to stock levels, individual price lists per customer, receivables tracking, supplier orders, landed cost calculation, stocktaking and e-invoicing all need to function as a single connected system rather than a set of disconnected tools between which data is transferred manually. For EU wholesale and distribution companies looking for a development partner, Prolink offers the nearshore advantage of a Central European timezone, communication in English and German, full GDPR compliance as a built-in standard and project costs competitive against Western European rates. Prolink builds wholesale software starting from the actual processes of the business rather than from a generic template that every company must accept with compromises, and every client receives full ownership of the delivered system without dependency on subscriptions or licences.

Why off-the-shelf solutions often fail wholesale businesses

There are numerous off-the-shelf ERP and invoicing solutions that promise complete coverage of wholesale operations. In practice, most of them handle standard cases well, but problems arise when the specific characteristics that are the rule rather than the exception in wholesale appear. Every customer has their own individual price list. The same product has different purchase prices depending on the supplier and purchase terms. The warehouse needs to update stock levels in real time as soon as a delivery note is issued. A field user needs to be able to confirm goods receipt without access to a desktop. Off-the-shelf solutions either do not support these requirements or support them in a way that requires workarounds that consume time and introduce errors. Custom software built around the actual processes of the business eliminates those compromises from the start.

System architecture

The foundation of any serious business software is a relational database that stores all business data, including products, customers, suppliers, documents, transactions, stock levels and price lists, in a structured format that enables fast queries, data consistency and secure history retention. The database must be designed to support all business relationships characteristic of wholesale, including the links between a customer and their price list, between an order and a goods receipt, and between a delivery note and stock levels. Above the database sits the backend, the business logic layer that handles all processes, calculates prices according to the customer's price list, checks stock availability when creating a delivery note and generates an e-invoice in the correct format. An API-first approach means the same backend serves the web admin interface and mobile application simultaneously without duplicating business logic.

Sales module: from quote to invoice

The sales module covers the complete lifecycle of a sales document. The process begins with a quote that the salesperson creates for a customer with automatic retrieval of prices from the price list linked to that customer. When the customer accepts the quote, it converts to a pro-forma invoice with one click, and after delivery to an invoice and delivery note. This document flow is automated so that data is not entered multiple times, and every document has a clear link to the document from which it originated. Customer price list management is one of the most critical functionalities: the system supports an unlimited number of price lists where each customer is linked to one or more price lists with the option of defining validity by time period, and when creating a document the appropriate price list for that customer and date is automatically retrieved.

Warehouse module

The warehouse module ensures that stock levels always reflect the actual physical state of the warehouse in real time. Every document that affects stock, whether a goods receipt, delivery note, return or stocktaking difference, immediately updates levels without the need for manual posting. A delivery note at the point of sale automatically reduces stock and blocks the issue of goods that are not available, unless a negative balance is explicitly permitted with a warning. Stocktaking freezes stock levels at the moment of initiation, compares the physically counted state with the book state and generates stocktaking differences that are posted as corrections, and in a custom solution this process can be supported by a mobile application that allows warehouse staff to enter counted quantities directly on a phone.

Procurement module

The procurement module covers the process from identifying the need for procurement to the physical arrival of goods and their recording. A supplier order is created based on current stock levels and defined minimum stock for each product, and the system supports sending the order to the supplier directly from the interface, tracking order status and linking to the goods receipt on delivery. Landed cost calculation is particularly critical because the purchase price of a product is not always equal to the supplier invoice price: the invoice is accompanied by transport costs, customs duties and handling charges that need to be distributed across products according to the chosen key, most commonly by value or weight. Only with an accurate purchase price is it possible to calculate the actual margin and profit per product and per transaction.

Financial module: e-invoices, collections and reports

E-invoicing support covers generation in the required XML format and transmission directly to the customer or through applicable fiscal systems. Receivables and open items tracking gives the sales team and finance department a clear picture of who owes what and for how long, with automatic payment recording and reminders for overdue amounts. The minimum set of reports for wholesale includes a turnover report by customer and product, a margin report by document and by product, a profitability report by customer, an overview of open items and receivables, stock movement analysis and a comparison of purchase and selling prices, all filterable by time period and exportable to Excel.

Overview of key wholesale software modules

Each module addresses a specific operational problem that without adequate system support is solved manually or through workarounds.

Integration with accounting software

Wholesale software and accounting software are two separate systems that need to exchange data without manual transcription. Integration is most commonly implemented through an API connection or a standardised export format that the accounting software can import. Every issued invoice, every goods receipt and every payment needs to be available to accounting in a format that can be posted directly with all required analytical codes, and a well-implemented integration eliminates the need for duplicate data entry and reduces the risk of errors.

Mobile application for warehouse operations

The mobile application is particularly valuable in companies where warehouse staff physically work with goods rather than at a computer. The application supports barcode scanning using the phone camera or a Bluetooth scanner, viewing current stock levels by location, confirming goods receipt against an order, issuing goods with availability verification, and entering stocktaking data. All operations run through the same APIs used by the web interface, meaning data is immediately visible to all system users without any synchronisation.

Multi-user access and permissions management

The permissions and roles system needs to be clearly defined and adaptable because every company has a slightly different organisational structure. A salesperson can create quotes and invoices but cannot modify price lists. A warehouse operative can work with goods receipts and delivery notes but has no access to financial reports. An administrator has access to everything including system configuration and user management. This access granularity reduces the risk of unintentional errors and ensures that sensitive data is available only to those who need it.

Prolink as a development partner for wholesale software

Prolink builds wholesale software on a solid architecture with a relational database, API backend, web admin interface and mobile application that communicates with the same system. Every element is developed according to the actual processes of the client, tested under real conditions and delivered with documentation. The client monitors progress on a development server accessible at any point during the project and receives full ownership of the code and all delivered materials without dependency on subscriptions or licences. For wholesale businesses considering a new system or replacing an existing one that no longer meets their needs, get in touch to discuss the specific requirements.

Frequently asked questions about wholesale software

What must good wholesale software include?

The minimum set of features includes individual price lists per customer, document flow from quote to invoice and delivery note, a warehouse module with real-time stock levels, a procurement module with landed cost calculation, e-invoices in the required format, receivables and collections tracking, and turnover and margin reports.

Why do off-the-shelf solutions often fail wholesale businesses?

Off-the-shelf solutions handle standard cases well but do not support the specific characteristics of wholesale operations, such as individual price lists per customer, complex landed cost calculation with cost distribution, or mobile operations for warehouse staff. Every adaptation of an off-the-shelf solution requires workarounds that consume time.

Can the system run on mobile devices?

Yes. The mobile application communicates with the same backend as the web interface, meaning data is immediately synchronised without additional steps. Warehouse staff can scan barcodes, confirm goods receipt and conduct stocktaking directly from a mobile device.

Does the system support e-invoicing?

Yes. Generation of e-invoices in the required XML format and their transmission directly to the customer or through applicable fiscal systems is a standard part of the system, in line with applicable legal requirements.

Can the system be integrated with an existing accounting programme?

Yes. Integration is implemented through an API connection or standardised export format, depending on what the accounting programme the business uses supports. The goal is to eliminate manual data transfer between systems.

Who owns the software after delivery?

The client owns the code, documentation and all delivered materials with no dependency on subscriptions or licences.