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• certifies correctness of invoices and supporting documents, 

• follows-up consumption of the budget of the contract, 

o changes (including amendments), and 

o closure. 

• provides input for preparation of contract documents (e.g. amendments and letters to contractors), 

• keeps the AO / AOD informed on the implementation of the contract and especially of incidents or potential risks of a contractor not complying with contractual obligations, 

• acts as contact person for the support centre (I0) and/or R1, and 

• acts as contact person for the contractor. 

## 3.11. IT Horizontal Functions 

IT Horizontal Functions cover mostly non-functional areas that have potential to affect work in any part of the directorate, for example 

• enterprise architecture and integration, 

• IT security, 

• business continuity, 

• ICT infrastructure capacity, 

• technology management, 

• ICT procurement, 

• release management 

• process improvement (includes the Quality Assurance Officer function). 

The list above is neither exhaustive nor does it mean that each listed area has an assigned function or specific person responsible for it. 

All roles participating in creation of new IT Products and Services and changing them have the responsibility to involve IT Horizontal Functions in the work. Examples of these roles are Heads of Units, Programme Managers, Service Managers, Project Managers and Change Managers. 

IT Horizontal Functions must be involved in 

• preparation of Investment Visions, 

• preparation of PIDs, and 

• Service Design for future evolution of the Service, for which a natural place and time is when the service improvement activities are being planned in order to be included as part of the next year(s) Programme Plans. 

The key entry point for engaging the IT Horizontal Functions are the two leaders of the key functions: 

a) Enterprise Architecture lead in the Director’s staff 

