Why would a business analyst (BA) want to define stakeholder assumptions?

Defining stakeholder assumptions helps in identifying and managing risks . Assumptions are beliefs held by stakeholders that influence decisions and requirements. By explicitly documenting and validating these assumptions, BAs can uncover potential gaps or incorrect expectations that may lead to project failure if left unchecked.

BABOK® Reference – Task: Plan Business Analysis Approach (Section 3.1):

“Assumptions should be identified and managed to reduce risk and clarify project constraints.”