The resource requirements planning for an SAP S4 Hana transformation project is influenced by various factors. Company size, complexity of the existing system landscape, planned scope of transformation, and project goals play a significant role in this regard. When planning the resource requirements, the following key aspects should be considered:

1. Composition of the project team: It is important to determine the number and qualifications of team members needed for the project. The team may include project managers, SAP consultants, developers, data migration specialists, change management experts, and other professionals.
2. Availability of time: The estimated duration of the project should be taken into account. Depending on the size and complexity of the transformation, this could range from several months to a year or longer. It is important to ensure that team members are available throughout the entire project.
3. Training and certification: If necessary, training and certification for the project team should be planned to ensure they have the necessary knowledge and skills to carry out the transformation project.
4. Infrastructure: The existing IT infrastructure should be assessed to ensure sufficient resources such as hardware, network, servers, and storage space are available for the implementation and operation of SAP S4 Hana.
5. External support: Consideration should be given to leveraging external support from SAP partner companies or consulting firms to address specific tasks or bottlenecks.
6. Communication and change management: Resources should be allocated for internal communication, user training, and guiding the change management process. A successful transformation requires appropriate employee involvement and clear communication about the goals and impacts of the project.
7. Testing and quality assurance: Adequate resources should be allocated for testing the new system, troubleshooting, and ensuring quality assurance to ensure that the SAP S4 Hana system functions properly and meets the requirements.

It is of great importance to create a comprehensive resource requirements plan and regularly review it to ensure that all necessary resources are available and the project can be successfully implemented.

Close collaboration among the project team, departments, and senior management is crucial to accurately determine the resource needs and ensure that all stakeholders effectively fulfill their responsibilities.