About BAS InSite
Starting in January 2026, Leiden University will transition to a new, future-proof software system: BAS InSite. This system will replace SAP Self Service and handle personnel, financial, and administrative matters currently managed through the Serviceplein.
The new system, built on AFAS software, provides a single integrated platform for HR, finance, and procurement. Business processes and systems will be improved, streamlined, and simplified to align with the modern way of working and collaborating that Leiden University aims to foster.
Getting the Basics Right
As part of its Strategic Plan, Leiden University is working to strengthen its organization and processes. By getting the Basics Right, we create Room for Renewal. This means adopting a new way of working based on trust, harmonization, integration, and collaboration. The result is a more efficient operational management.
Frequently asked questions
Yes, you will start using BAS InSite in January 2026, as it is replacing SAP Self Service and parts of Serviceplein. BAS InSite is where you will find your personal admin. You will be able to access the system in the app on your mobile phone, tablet or computer and will easily be able to request leave, change your address, claim expenses, view your payslip or indicate your choices in the Terms of Employment Individual Choices Model.
The new system supports HR, financial and purchasing processes. Some staff – HR staff, business controllers, management assistants, managers and administrative staff – will work more intensively with BAS InSite than others, so more is changing for them. The system will affect how we work and is more user-friendly, with a better overview of process steps. Ordering goods (such as flowers or office supplies) will be much easier. Staff who work less frequently with BAS InSite will mainly notice that the intuitive system makes their personal admin quicker and easier.
Implementing a new system takes time. Alongside setting up BAS InSite, converting data from the old system and connecting it to some 83 other systems, much more is happening to lay this foundation for our core administration. The BAS Programme (Building on Collaboration) is working hard to prepare the organisation. The new system and working method are being introduced through Local AFAS Teams (LATs), each led by a chair. Their key tasks include identifying training and communication needs, adapting the implementation plan to their department and flagging any specific issues.
In October the the full HR, finance and purchasing chain will be extensively tested. BAS InSite is very user-friendly, with plenty of in-built guidance and instructions. Staff whose work will change significantly will be trained in November/December to ensure everyone is ready to start using the new system from January 2026. Where needed, e-learning courses, drop-in sessions and webinars will be organised.
Questions?
It is important that you have completed your personal administration by November 30, 2025, at the latest. The checklist provides an overview of the administrative tasks that must be completed and approved in the system on time we have specially put together to support you in preparing for the transition to the new Basic Administration System, BAS InSite.
- Questions about your administration can be found on this website.
- For more background information, visit the SharePoint page.