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MB-330 · Question #468

Drag and Drop Question A company uses Dynamics 365 Supply Chain Management. A planner observes that an item has last-minute orders placed. These orders drive new demand that is dependent upon POs…

The correct answer is Lead time; Positive days. Explanation: Dynamics 365 SCM Vendor Turnaround & Reorder Buffer The question presents two distinct requirements and asks you to match the correct configuration to each. --- Requirement 1: Adjust for vendor inconsistency with turnaround time Correct Configuration: Lead Time…

Implement master planning

Question

Drag and Drop Question A company uses Dynamics 365 Supply Chain Management. A planner observes that an item has last-minute orders placed. These orders drive new demand that is dependent upon POs arriving on schedule. The planner determines the vendor is inconsistent with turnaround time. You need to configure the system to adjust for the vendor turnaround and add a buffer of two days prior to reordering product. What should you configure for each requirement? To answer, move the appropriate configurations to the correct requirements. You may use each configuration once, more than once, or not at all. You may need to move the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point. Answer:

Exhibit

MB-330 question #468 exhibit

Answer Area

Drag items

Lead timeNegative daysPositive daysCoverage time fence

Correct arrangement

  • Lead time
  • Positive days

Explanation

Explanation: Dynamics 365 SCM Vendor Turnaround & Reorder Buffer

The question presents two distinct requirements and asks you to match the correct configuration to each.


Requirement 1: Adjust for vendor inconsistency with turnaround time

Correct Configuration: Lead Time

Why: Lead time is the number of days the system expects a vendor to take from purchase order placement to delivery. When a vendor is inconsistent, you increase the lead time value to a conservative estimate that accounts for their typical delays. Master Planning uses lead time to calculate when to place a planned purchase order, working backward from the demand date. A longer lead time tells the system to order earlier, buffering against the vendor's unreliability.

Key point: This is configured on the item's coverage settings, item default order settings, or directly on the vendor/item combination.


Requirement 2: Add a buffer of two days prior to reordering

Correct Configuration: Positive Days

Why: Positive days (in a coverage group) defines how many days forward the planning engine looks for existing supply before generating a new planned order. Setting this to 2 means the system will check whether any existing receipts arriving within the next 2 days can cover new demand - if so, no new order is triggered. This acts as a reorder buffer, preventing premature or unnecessary planned orders.

Key point: This reduces "nervous" planning by giving existing supply a 2-day window to be reused before a new order fires.


Common Mistakes & Misconceptions

MisconceptionReality
Using Negative days for the bufferNegative days looks backward - it allows a late-arriving receipt to cover past-due demand. It doesn't add a forward buffer before reordering.
Using Coverage time fenceThis defines the planning horizon (how far out MRP looks), not a reorder buffer or lead time adjustment.
Confusing lead time with positive daysLead time = how long delivery takes; Positive days = tolerance window before generating a new order. They solve different problems.

Summary

RequirementConfiguration
Vendor inconsistent with turnaround timeLead Time
Buffer of 2 days before reorderingPositive Days

Topics

#master planning#vendor lead time#reorder buffer#safety days

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