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Manufacturing & supply chainMermaid

Material requirements planning (MRP) run template

How an MRP run nets demand against inventory and open orders, explodes the bill of materials, offsets lead times and creates planned orders and exception messages. This flowchart template contains 18 labelled steps, 3 decision points, branches such as “No”, “Yes”, “Make”.

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Steps in this flowchart

  • MRP run scheduled
  • Master production schedule
  • Inventory on hand & open orders
  • Bills of materials & lead times
  • Gross requirements by period
  • Net against on hand & scheduled receipts
  • Net requirement above zero?
  • No action for this item
  • Apply lot sizing rule
  • Offset by lead time
  • Create planned order
  • Explode BOM to next level
  • More BOM levels?
  • Generate exception messages
  • Make or buy?
  • Convert to production order
  • Convert to purchase requisition
  • Planner reviews schedule

How to use this flowchart template

  1. Click Open in the editor. The flowchart opens on a new page in FlowDiagram — nothing is uploaded and there is no sign-up.
  2. Rename, add or delete shapes and drag them where you want; connectors stay attached as things move.
  3. Drop in vendor logos from the library — 1,160 of them, including every AWS, Azure and Google Cloud service icon — or restyle it with the colour and theme controls.
  4. Prefer text? Edit the Mermaid source below and paste it in through ☰ → Import diagram (see the Mermaid editor); it imports as an editable diagram.
  5. Export to PNG, SVG or PDF, or press Ctrl+L for a link that carries the whole diagram.

Mermaid source

The whole template is the text below. Paste it into FlowDiagram, keep it in Git next to the code it describes, or hand it to an AI assistant to extend.

flowchart TD
  A([MRP run scheduled]) --> B[(Master production schedule)]
  A --> C[(Inventory on hand & open orders)]
  A --> D[(Bills of materials & lead times)]
  B --> E[Gross requirements by period]
  E --> F[Net against on hand & scheduled receipts]
  C --> F
  F --> G{Net requirement above zero?}
  G -->|No| H[No action for this item]
  G -->|Yes| I[Apply lot sizing rule]
  I --> J[Offset by lead time]
  J --> K[Create planned order]
  K --> L[Explode BOM to next level]
  D --> L
  L --> M{More BOM levels?}
  M -->|Yes| E
  M -->|No| N[Generate exception messages]
  N --> O{Make or buy?}
  O -->|Make| P[Convert to production order]
  O -->|Buy| Q[Convert to purchase requisition]
  P --> R([Planner reviews schedule])
  Q --> R

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