In many countries, vouchers must be numbered sequentially. The important point: it is not about endless, gapless numbering across all years, but about a…
In many countries the rule is: vouchers and posting transactions must be numbered sequentially. Important: This is not about endless, gapless numbering across all years, but about a clear structure within each posting year . Dynamics 365 Finance makes this easy – with the chronological numbering feature. Setup is done quickly and ensures order and transparency. Using the example of vendor vouchers for the years 2025 and 2026, we show how it works. Good to know: In Switzerland this is not required by law, but some companies rely on it – for better traceability and internal compliance. Step-by-step guide: Automatic voucher numbering by year 1. Activate the feature In the Feature management workspace, switch on the Chronological numbering option (usually already active). 2. Define number sequences Under Organization administration > Number sequences > Number sequences create a separate sequence for each year. Use a prefix such as 2025-##### for 2025 and 2026-##### for 2026. 3. Configure number sequence groups Assign them in Accounts payable > Setup > Accounts payable parameters > Number sequences . Create groups for the respective years and assign the previously defined number sequences. 4. Set up chronological groups Under Organization administration > Number sequences > Chronological number sequence groups , define the validity: 01.01.2025 – 31.12.2025 for 2025 01.01.2026 – 31.12.2026 for 2026 01.01.2027 – 31.12.2027 for 2027 Pro tips Automatic switching: With correct date ranges, the system switches on its own. Multi-dimensional control: Differentiate by company or voucher type. Best practice: Test in the sandbox first, then go live. Best practices for international companies Check local requirements: Mandatory in Italy or Spain, voluntary in Switzerland. Global consistency: Define a uniform strategy for number sequences. Automated switching: Use automation to map country-specific rules. Documentation: Don’t forget documentation – it makes audit