Requirements baseline is a document that contains the approved version of the requirements that serves as a reference point for further changes. Requirements baseline can help the business analyst to address the issue of underestimating the required budget and schedule by defining the scope, value, quality, risk, and feasibility of each requirement. Requirements baseline can also help to negotiate the scope in the contract with the customer by showing how each requirement aligns with their needs and expectations, and proposing possible trade-offs or alternatives. References: = PMI Professional in Business Analysis (PMI-PBA)Examination Content Outline (2019), page 10; Business Analysis for Practitioners: A Practice Guide (2015), page 40.