The workflow trigger that the business analyst should incorporate is any change to the requirements matrix.
This trigger would ensure that the appropriate stakeholders are notified of any updates, additions, deletions, or modifications to the requirements that affect the business analysis repository. Changes to test cases traced to requirements, change through project life cycle, and changes to stakeholder memberships are not relevant triggers for the notification workflow, as they do not directly affect the requirements matrix. References: PMI Professional in Business Analysis (PMI-PBA)Examination Content Outline1, PMI Guide to Business Analysis2, Business Analysis for Practitioners: A Practice Guide

The decision-making process in the business analysis plan defines how decisions will be made regarding the requirements and the business analysis approach. It specifies the roles and responsibilities of the decision makers, the criteria and methods for making decisions, and the process for resolving conflicts and disagreements. Having a clear decision-making process can help the business analyst facilitate the requirements workshop and reach an agreement among the stakeholders with different points of view and priorities. References: = PMI Professional in Business Analysis (PMI-PBA)Examination Content Outline, page 13.

Documenting the source of each requirement in the requirements traceability matrix allows for easy identification of the requestor and facilitates communication with stakeholders. References: PMI-PBA Examination Content Outline, Business Analysis for Practitioners: A Practice Guide.

According to the PMI Professional in Business Analysis objectives and content, a prototype is a tool that can be used to elicit, analyze, and validate requirements. A prototype is a representation of a solution that allows stakeholders to interact with it and provide feedback. By developing a prototype, the business analyst can gather functional requirements from the end user and ensure that the new interface supports their core business processes. A prototype can also help to reduce ambiguity, resolve conflicts, and increase stakeholder satisfaction. References:
* PMI Professional in Business Analysis objectives and content: PMI-PBA Certification
* PMI Professional in Business Analysis reference list: PBA Reference List
* PMI Professional in Business Analysis study guide: PMI.com

According to the PMI Professional in Business Analysis objectives and content, a subject matter expert (SME) is a person who has specialized knowledge or skills in a particular domain or area. A SME can provide valuable insights, information, and guidance to the project team, especially when the project involves a new or unfamiliar market. By hiring external SMEs for the core project team, the business analyst can help to ensure that the project has the necessary expertise and resources to perform the business analysis activities effectively and efficiently. External SMEs can also help to identify and validate the business needs, requirements, and solutions for the new market, and to reduce the risks and uncertainties associated with the project. References:
* PMI Professional in Business Analysis objectives and content: PMI-PBA Certification
* PMI Professional in Business Analysis reference list: PBA Reference List
* PMI Professional in Business Analysis study guide: Study.com