What are some common issues that can arise from the omission or uncertainty of participant roles in a project?

The RACI matrix can be used to improve project efficiency by clearly defining the roles and responsibilities of each team member. This helps to avoid confusion and ensures that everyone knows what they are supposed to do. It also promotes collaboration and improves the outcome of every project.

Some alternatives to the RACI matrix for defining roles and responsibilities include the DACI matrix (Driver, Approver, Contributor, Informed), RAPID model (Recommend, Agree, Perform, Input, Decide), and the RASCI model (Responsible, Accountable, Supportive, Consulted, Informed). Each of these models provides a different approach to defining roles and responsibilities, and the best one to use depends on the specific needs and structure of your organization.