# SAP MRP Types, Lot Sizing and Procurement Keys Reference > Source: https://netray.co/tools/sap-mrp-type-reference > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: Free Tools ## Short answer Searchable list of SAP MRP types, lot sizing procedures, procurement types and special procurement keys used in the material master MRP views. ## Category sap ## Erp SAP S/4HANA ## Audience - SAP MM consultant - Production planner - Materials manager ## Tool **Kind:** worksheet **Mode:** reference **Columns:** #### Field **Key:** group **Type:** text #### Key **Key:** code **Type:** text #### Meaning **Key:** meaning **Type:** text #### Planning note **Key:** note **Type:** text **Rows:** **Group:** MRP type **Code:** PD **Meaning:** MRP **Note:** Deterministic planning on requirements, the standard for planned parts **Group:** MRP type **Code:** ND **Meaning:** No planning **Note:** Material is excluded from MRP, useful for non planned consumables **Group:** MRP type **Code:** VB **Meaning:** Manual reorder point planning **Note:** Planning when stock falls under the reorder point, quantity entered by the planner **Group:** MRP type **Code:** VM **Meaning:** Automatic reorder point planning **Note:** Reorder point and safety stock computed from forecast values **Group:** MRP type **Code:** V1 **Meaning:** Manual reorder point planning with external requirements **Note:** Reorder point planning that also looks at dependent and sales demand **Group:** MRP type **Code:** V2 **Meaning:** Automatic reorder point planning with external requirements **Note:** Automatic reorder point plus external requirements **Group:** MRP type **Code:** VV **Meaning:** Forecast based planning **Note:** Requirements derived from the forecast, no reorder point **Group:** MRP type **Code:** M0 **Meaning:** Master production scheduling **Note:** Planning of master schedule items before the rest of the BOM **Group:** Lot size **Code:** EX **Meaning:** Lot for lot order quantity **Note:** One order per requirement, no stock built **Group:** Lot size **Code:** FX **Meaning:** Fixed lot size **Note:** Order quantity fixed in the fixed lot size field, repeated until the shortage is covered **Group:** Lot size **Code:** HB **Meaning:** Replenish to maximum stock level **Note:** Order up to the maximum stock level, common for reorder point materials **Group:** Lot size **Code:** TB **Meaning:** Daily lot size **Note:** Requirements of a day grouped into one lot **Group:** Lot size **Code:** WB **Meaning:** Weekly lot size **Note:** Requirements of a week grouped into one lot **Group:** Lot size **Code:** MB **Meaning:** Monthly lot size **Note:** Requirements of a month grouped into one lot **Group:** Procurement type **Code:** E **Meaning:** In-house production **Note:** Planning creates planned orders **Group:** Procurement type **Code:** F **Meaning:** External procurement **Note:** Planning creates purchase requisitions **Group:** Procurement type **Code:** X **Meaning:** Both procurement types **Note:** Either, decided by special procurement or the planner **Group:** Special procurement **Code:** 10 **Meaning:** Consignment **Note:** Vendor owned stock at your site **Group:** Special procurement **Code:** 20 **Meaning:** Stock transfer **Note:** Obtain the material from another plant by stock transport order **Group:** Special procurement **Code:** 30 **Meaning:** Subcontracting **Note:** Material is made at a vendor using components you provide **Group:** Special procurement **Code:** 40 **Meaning:** Production in another plant **Note:** The planned order is produced in a different plant **Group:** Special procurement **Code:** 50 **Meaning:** Phantom assembly **Note:** Assembly is not stocked, its components go straight to the parent order **Notes:** MRP types, lot sizes and special procurement keys are configured per customer and can be extended. The entries above are SAP standard keys, confirm them in your own customizing (OMI8 and OMI4 for MRP types and lot sizes) before changing material masters. ## Content **Intro:** The MRP type, lot sizing key and procurement type in the material master MRP views decide how SAP plans every material. A wrong setting means too many orders, no orders, or the wrong kind of order. This reference lists the common standard keys. **Sections:** #### How to use this reference **Body:** Filter by field to see only MRP types, lot sizes, procurement types or special procurement keys. Search for a word such as reorder or consignment to find the right key. Use the planning note to choose a setting when you build material master templates, or to check an existing material against what the planner expects. Export to Excel for training notes and data migration mapping. #### How these settings work together **Body:** The MRP type chooses the planning method: deterministic MRP (PD) works from requirements, reorder point planning (VB, VM) reacts to stock level, and forecast based planning (VV) follows the forecast. The lot sizing key decides order quantity once a shortage is found. The procurement type decides whether planning creates a planned order or a purchase requisition, and special procurement overrides it for cases like subcontracting or stock transfer. The MRP controller and planning time fence then decide who sees the result and what can change. **Bullets:** - PD plus EX suits made to order parts with known demand - VB or VM with HB suits cheap consumables and bulk items - ND suits items that you do not want in the planning run - Special procurement 30 requires a subcontracting info record and a BOM #### Worked example **Body:** A plant buys M6 bolts that are used everywhere and cost cents. Planning them through PD creates thousands of requisitions. Setting MRP type VM with reorder point and safety stock, lot size HB with a maximum stock level, and procurement type F means the system raises one requisition per replenishment cycle. A high value machined housing, in contrast, stays on PD with EX so that every order ties to a real need. #### Common mistakes **Body:** Setting a reorder point on a PD material does nothing for MRP except safety stock logic. Leaving the lot size on EX for low cost items floods buyers with small requisitions. Switching MRP type on a live material without resetting the MRP area, planning file entry or forecast can lead to missing orders until the next net change run. And changing a special procurement key on materials that have open orders requires a review of those orders first. **Cta:** If your planners spend time explaining why MRP created or missed an order, we can build a read-only assistant that explains the planning result from your material master and stock data. **Faq:** #### What is the difference between MRP type PD and VB? **Answer:** PD is deterministic MRP: it plans from actual and forecast requirements, creating orders for each shortage. VB is manual reorder point planning: it orders when available stock drops below the reorder point, ignoring future requirements. VB is simpler and suits low value or stable consumption items. #### Where do I set the MRP type in SAP? **Answer:** In the material master, on the MRP 1 view, via MM01 for creation or MM02 for changes. The MRP type, MRP controller, lot sizing procedure and reorder point sit on that view. Procurement type and special procurement are on the MRP 2 view. Use mass change tools for large volumes. #### What does lot size EX mean in SAP? **Answer:** EX is lot for lot order quantity. For each shortage MRP creates an order of exactly the missing quantity, with no extra stock. It is common for expensive or made to order items. Rounding values, minimum lot and maximum lot can still change the proposed quantity. #### How do I exclude a material from MRP? **Answer:** Set the MRP type to ND, no planning, in the MRP 1 view. The material is then ignored by planning runs, but stock and movements still work. Make sure open demand does not exist first, because ND will not create orders for it. ## Search terms sap mrp types, sap mrp type pd vb vm nd, sap mrp type list, sap lot sizing procedures ex fx hb, sap procurement type e f x, sap special procurement key, sap reorder point planning mrp type, sap mrp type material master mrp 1 --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json