Constraints and Assumptions in Procurement Planning

PMBOK v8 Definition

Constraints and assumptions are documented during procurement planning to define the boundaries and conditions that affect procurement activities. Constraints are factors that limit the project team's options, such as legal jurisdiction, currency for payments, and authority limitations when the performing organization has a procurement department. Assumptions are factors considered true for planning purposes, including the availability of prequalified sellers and whether independent estimates will be used as evaluation criteria. These items are documented in the procurement management plan, which can be formal or informal, highly detailed or broadly framed, based upon the needs of each project.

Why It Matters for the Exam

The PMI exam frequently tests your ability to distinguish between constraints and assumptions in procurement contexts, particularly regarding legal jurisdiction, payment currency, and organizational procurement department authority. Questions appear in scenario-based items where you must identify which factor is a constraint versus an assumption, or determine what should be documented in the procurement management plan.

Key Points to Remember (for the exam)

Main Input for Constraints: Organizational procurement policies and legal requirements that limit project options
Main Output: Procurement management plan documenting all constraints and assumptions
Key Constraint Types: Legal jurisdiction, currency for payments, authority limitations of project team when procurement department exists
Key Assumption Types: Independent estimates will be used as evaluation criteria, prequalified sellers are available, performance bonds or insurance contracts will mitigate risk
Common Confusion: Confusing constraints with assumptions—constraints are fixed limitations, assumptions are uncertain factors treated as true for planning
Critical Exam Point: When the performing organization has a procurement department, the project team's authority and constraints must be clearly defined
Documentation Rule: All procurement decisions, including constraints and assumptions, must be documented in the procurement management plan

Typical PMI Exam Example

A project manager is planning procurement for a construction project in a foreign country. The organization's legal department specifies that all contracts must be governed by local law and payments made in the local currency. The project manager assumes that three prequalified sellers from a previous project are still available. Which items are constraints in this scenario? Answer: Legal jurisdiction and currency for payments are constraints; prequalified seller availability is an assumption.

PMI Exam Traps

Trap: Treating "independent estimates" as a constraint
Reality: Independent estimates are an assumption—the determination of whether they will be used and needed as evaluation criteria is a planning decision, not a fixed limitation
Trap: Assuming the project team has full authority over procurement
Reality: When the performing organization has a procurement department, the project team's authority is constrained and must be documented
Trap: Confusing "risk management issues" with constraints
Reality: Risk management issues (like performance bonds or insurance) are considerations that affect procurement strategy, not constraints that limit options
Trap: Thinking constraints are optional to document
Reality: Constraints and assumptions that could affect planned procurements must be documented in the procurement management plan

Important PMI Connections

Related Concept	Relationship Type	Exam Attention Point
Procurement Management Plan	Documents constraints and assumptions	The plan includes guidance on how constraints affect procurement activities
Make-or-Buy Analysis	Precedes constraint identification	After deciding to buy, constraints determine how procurement proceeds
Risk Management	Risk issues are documented alongside constraints	Performance bonds and insurance are risk mitigation tools linked to constraints
Project Schedule	Timetable of procurement activities must align with constraints	Schedule constraints affect procurement timing and delivery methods
Stakeholder Roles	Authority constraints affect stakeholder responsibilities	Procurement department authority limits project team decisions

Quick Review Questions

When the performing organization has a procurement department, what must be documented regarding the project team?
A project requires payments in euros and contracts governed by French law. Are these constraints or assumptions?
What is the relationship between independent estimates and evaluation criteria in procurement planning?
Which document specifies whether international competitive bidding, national competitive bidding, or local bidding should be used?
How do performance bonds and insurance contracts relate to procurement constraints?

PMBOK v8 Reference

Section X4.4 - Procurement Strategy Section on Procurement Management Plan components including constraints, assumptions, legal jurisdiction, currency, independent estimates, and risk management issues