MB-330 Implement Master Planning Practice Question
A manufacturing company runs Master Planning nightly. The production planner reports that for several finished goods, the system plans production orders for components that already have sufficient on-hand inventory at the same warehouse. The components have a coverage code of Requirement and a positive on-hand quantity, but the master plan still creates planned purchase orders for them. You need to determine the most likely cause. What should you check first?
⚠ Common exam trap
The trap here is assuming that any on-hand quantity is automatically available to Master Planning, when in fact only inventory within the configured coverage dimensions and warehouses is considered.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The on-hand inventory is stored in a warehouse or inventory status that is not included in the coverage group for the master plan.
Master Planning calculates net requirements by subtracting available inventory from gross requirements. Available inventory is defined by the item's coverage group, which specifies the warehouses and inventory statuses to include. If on-hand inventory resides in a warehouse not covered or has an excluded status, the plan ignores it and generates replenishment. Checking the coverage group configuration is the first step to resolve this.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The item's coverage code is set to Requirement, which always ignores on-hand inventory.
Why it's wrong here
Requirement coverage does not ignore on-hand; it uses on-hand to reduce net requirements. It only plans what is needed after subtracting available inventory. Claiming it always ignores on-hand is incorrect. The planner should look at other settings that could affect availability, such as negative on-hand or reservation issues, before dismissing the coverage code.
- ✓
The on-hand inventory is stored in a warehouse or inventory status that is not included in the coverage group for the master plan.
Why this is correct
Master Planning considers only inventory within the coverage dimensions and warehouses included in the item's coverage group. If the on-hand is in a warehouse excluded from coverage, or has an inventory status that is not included, the plan treats it as unavailable and creates replenishment. This is a common configuration issue that explains why sufficient on-hand is ignored.
- ✗
The components have open production orders consuming the on-hand quantity, making it unavailable to the master plan.
Why it's wrong here
Open production orders for components would consume inventory, but that would typically reduce availability and could cause replenishment. However, if the on-hand is already reserved or allocated, the master plan may still see it as available depending on reservation settings. This is not the most likely first check; other factors like negative on-hand or item coverage dimensions are more common culprits.
- ✗
The item's lead time is too short, causing the master plan to order early.
Why it's wrong here
Lead time affects the timing of planned orders, not whether replenishment is generated. A short lead time would cause orders to be scheduled closer to the demand date, but it would not create orders when on-hand is sufficient. The issue is that the plan does not see the on-hand as available, which points to coverage dimension or warehouse configuration, not lead time.
Visual reference
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This MB-330 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MB-330 exam.