Inventory management & physical inventory

Every receipt, issue and transfer is posted with a movement type that drives quantity update, value update, account determination (transaction/event key) and screen fields. The material document records quantities; an accounting document follows when value changes.

• 101/102 GR for PO (and reversal), 103/105 GR to blocked stock then release.
• 201 GI to cost centre, 261 to production order, 221 to project, 551 scrapping.
• 122 return to supplier, 161 return PO item, 501 receipt without PO, 561 initial stock entry.

T-codes & apps

MIGOMB51MB52MMBEMB5BOMJJ

In SAP S/4HANA, material documents are stored in the single table MATDOC; stock quantities are calculated on the fly instead of being stored in aggregate tables. Classic tables (MKPF, MSEG, MARD, MCHB…) remain readable through compatibility views.

• Fewer locks — parallel goods movements on the same material are faster.
• Custom code writing to MARD/MSEG directly must be adapted during conversion.
• MB-transactions such as MB1A/MB1B/MB1C/MB31 are replaced by MIGO.

T-codes & apps

MIGOMATDOC (table)NSDM_* (compatibility views)

Storage-location stock exists as unrestricted, quality inspection or blocked, plus GR blocked stock (valuation-free) and stock in transit. Special stocks are identified by a key: K supplier consignment, O stock at subcontractor, E sales order stock, Q project stock, W consignment at customer, V returnable packaging at customer.

• QM inspection lots move stock into quality inspection and release it through usage decision.
• Stock in transit appears for two-step STOs (643/101 or 351/101).
• Special stocks need the special-stock indicator in MIGO and in reports.

T-codes & apps

MMBEMB52MB53MB54MB58MBLB

A transfer posting changes stock type, material number, batch or special stock; a stock transfer moves stock between locations. One-step transfers post issue and receipt together; two-step transfers create stock in transfer.

• 311 storage location to storage location (one-step); 313/315 two-step.
• 301 plant to plant (one-step); 303/305 two-step.
• 309 material to material, 321 QI → unrestricted, 343/344 blocked ↔ unrestricted, 411 K consignment → own stock.

T-codes & apps

MIGOMB1B (obsolete → MIGO)MB5T

A reservation reserves stock for a future issue and feeds MRP. Returns to suppliers use 122 (with reference to the GR) or a returns PO item (161). Reversals use the paired movement type (102 for 101, 262 for 261).

• Reservations can be created manually or automatically by production, PM and network orders.
• Old reservations are flagged for deletion by the 'days in past' setting (report RM07RVER).
• Cancel a material document in MIGO via 'Cancellation' — it posts the reversal movement automatically.

T-codes & apps

MB21MB22MB24MB25MBSTMIGO

Physical inventory compares counted stock with book stock and posts differences (movement types 701/702). Methods include annual (periodic), cycle counting by ABC indicator, sampling and continuous inventory.

• Create document → print count sheet → enter count → post differences (or MI07 in batch).
• Posting block on the PI document freezes movements for the item until counted.
• Cycle counting indicator (A/B/C/D) in the material master sets frequency; MICN generates documents.

T-codes & apps

MI01MI31MICNMI04MI20MI07MI09MI24

Batch management tracks homogeneous quantities with their own characteristics (batch classification, class type 023). Shelf-life expiration date (SLED) and minimum remaining shelf life are checked at GR. Serial numbers identify individual units.

• Batch level: plant, material (standard) or client.
• Batch determination (strategy types, sort and selection) supports FEFO picking in pharma.
• Serial number profile defines when serial numbers are mandatory (GR, GI, delivery).

T-codes & apps

MSC1NMSC2NMSC3NMB56 (batch where-used)IQ01