According to Herzberg's two-factor theory of motivation, there are two sets of factors that influence job satisfaction: hygiene factors and motivators. Hygiene factors are those job factors that are essential for existence of motivation at workplace, but do not lead to positive satisfaction for long-term. They are also called dissatisfiers or maintenance factors, as they are required to avoid dissatisfaction. Hygiene factors include pay, company policies, fringe benefits, physical working conditions, status, interpersonal relations, and job security. Motivators are those factors that yield positive satisfaction and enhance motivation. They are inherent to work and relate to self-growth and self-actualization. Motivators include recognition, sense of achievement, growth, responsibility, and advancement. The chance to excel is a motivator, not a hygiene factor, according to Herzberg's theory. References: Herzberg's Two-Factor Theory Of Motivation-Hygiene - Simply Psychology; Herzberg's Two-Factor Theory of Motivation - Management Study Guide; Two-factor theory - Wikipedia

According to the BABOKGuide1, the business analysis approach is the set of processes, tools, deliverables, techniques, and standards that will be used to perform business analysis work on a project. The approach can be either plan-driven, adaptive, or a hybrid of both. A plan-driven approach is more suitable for projects that have stable and well-defined requirements, low levels of change, and clear acceptance criteria. An adaptive approach is more suitable for projects that have uncertain or evolving requirements, high levels of change, and emergent outcomes. Therefore, one of the factors that would drive the decision towards an adaptive approach is the organization's tolerance for uncertainty, which means the degree to which the organization is willing to accept ambiguity and risk in the project. An organization with a high tolerance for uncertainty can benefit from an adaptive approach that allows for frequent feedback, experimentation, and learning. References:
* A Guide to the Business Analysis Body of Knowledge(BABOKGuide), Version 3, Chapter 3:
Business Analysis Planning and Monitoring, Section 3.2: Plan Business Analysis Approach, p. 57-59
* CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Chapter 3: Business Analysis Planning and Monitoring, Section 3.2: Plan Business Analysis Approach, p. 89-91

A BA should identify any potential constraints that may affect the requirements or the solution and communicate them to the relevant stakeholders for resolution. In this case, the policies are a constraint that may prevent the implementation of the requirement or require a change to the policies. The BA should review the constraint with management and seek their guidance on how to proceed. The BA should not modify the policies or the requirements without proper approval or justification. References:
* CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Chapter 5: Requirements Analysis and Design Definition, page 214
* Business Analysis Body of Knowledge (BABOK ) Guide, Version 3, Section 5.2: Analyze Current State, page 112
* Certified Business Analysis Professional (CBAP) | Coursera, Course 3: Requirements Analysis and Design Definition, Week 2: Analyze Current State, video: "Identify Constraints"

A requirements workshop is a type of elicitation technique that involves carefully selected stakeholders and subject matter experts for a short, intensive period (usually for one to a few days) to define and document the requirements for a solution. A requirements workshop is also known as a joint application development (JAD) session or a facilitated workshop. The benefits of a requirements workshop include increased stakeholder collaboration, consensus building, creativity, and productivity. A requirements workshop is facilitated by a business analyst or a professional facilitator, who guides the participants through a structured agenda and ensures that the objectives of the workshop are met. References:
* BABOK Guide, section 4.2.5.1, page 108
* CBAP / CCBA Certified Business Analysis Study Guide, chapter 5, page 173
* Certified Business Analysis Professional (CBAP) | Coursera, course 2, week 3, video 3.1

One of the possible reasons for the disagreement among the stakeholders is that they have different interpretations of the requirements, which may lead to conflicting expectations, assumptions, and preferences.
The BA should use various techniques to elicit, analyze, validate, and communicate the requirements clearly and consistently to all the stakeholders, and to resolve any ambiguities or discrepancies. The BA should also ensure that the requirements align with the business need and the solution scope that were formally approved by the stakeholders at the beginning of the project.