According to the PMBOK Guide, the project manager should identify the project stakeholders by using various sources of information, such as historical records, organizational charts, stakeholder registers, and lessons learned from previous projects. Lessons learned from previous projects can provide valuable insights into the stakeholder's expectations, needs, interests, influence, and potential impact on the project. By using lessons learned from the previous project as a guide, the project manager can create a more accurate and comprehensive stakeholder register for the current project, which will help in planning and managing stakeholder engagement. References: PMBOK Guide, 6th edition, page 511-512, section 13.1.1.2 Identify Stakeholders: Data Gathering.