Microsoft has introduced an important update to the management of number series. Although this change has gone somewhat unnoticed, it is essential for Business Central developers and administrators to understand it and update their customizations as soon as possible to avoid future errors.

Cambios en la gestión de series numéricas en Business Central
The classic codeunit NoSeriesManagement has been marked as obsolete. Instead, the new codeunits must be used:
- No. Series.
- No. Series – Batch.
In addition, methods such as TestManual and InitSeries have also been replaced by new versions within these codeunits.

Business Foundation and the Evolution of Business Central
Microsoft has begun moving functionalities from the Base Application into a new app called Business Foundation. The Number Series module is the first to make this transition, marking an important shift in the architecture of Business Central.
User Interface Improvements
The Number Series page now includes:
- New FactBoxes.
- An action to display series that are about to expire.
These enhancements improve visual management and make it easier to track active number series.
Key Technical Changes in Number Series
1. PeekNextNo vs. TryGetNextNo
Before:
DocNo := NoSeriesMgt.TryGetNextNo(GenJnlBatch.»No. Series», EndDateReq);
Now:
DocNo := NoSeries.PeekNextNo(GenJnlBatch.»No. Series», EndDateReq);
2. GetNextNo with deferred modification
Previously, arrays from NoSeriesManagement were used, which made the code more complex. Now, with No. Series – Batch, the process is simplified:
DocNo := NoSeriesBatch.GetNextNo(«No. Series», «Posting Date»);
NoSeriesBatch.SaveState();
3. Modernized InitSeries
Before:
NoSeriesMgt.InitSeries(…);
Now:
if NoSeries.AreRelated(…) then …
No := NoSeries.GetNextNo(…);
4. Number simulation
A new method, SimulateGetNextNo, has been added—ideal for testing without modifying the actual number series.
«Document No.» := NoSeriesBatch.SimulateGetNextNo(…);
Copilot and Number Series Management
Yes—Microsoft is actively working on integrating Copilot with number series management. Although still in development, it promises to become a powerful tool to automate processes and enhance the user experience.
ABD Consulting: your partner for Business Central implementation

At ABD Consulting and IT Solutions we specialize in the implementation, customization, and support of Microsoft Dynamics 365 Business Central. Our team helps companies get the most out of the latest updates—such as the new number series management—ensuring a smooth, error‑free transition tailored to each business.
- Preliminary analysis of processes and requirements.
- Configuration and customization of Business Central.
- Migration from Dynamics NAV or other systems.
- Ongoing support and user training.
If you want your company to take full advantage of Business Central, get in touch with us and we’ll guide you through every step of the process.