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        库存管理是SAP MM模块中的重要组成部分。它是对仓库的货物进行全面的库存管理,包括数量上和价值上。并且计划,执行和检查所有的货物移动,以及执行实际的盘点。

       本文主要介绍库存管理的常见问题以及解决方案。下面的图片上可以看到库存管理在整个物流流程中的位置:

                                    MM模块.JPG

       在事物代码MMBE中可以看到如下的库存状态:

                                             库存.JPG
       这里也可以看到库存的类型,比如质检库存,非限制使用库存等等。在事物代码MB5B中可以进一步地查看某一时间段的起止库存, 事物代码MB51可以看到针对某一库存的移动历史。

       问题发生比较多的就是在货物的移动环节。主要有收货,转储(包括逻辑上转储,比如从质检库存到非限制使用库存;物理转储,比如从工厂A到工厂B)和发货三大种类。常见问题有:

1. 物料移动时产生的会计凭证中有不明金额,有一些可能是出现了数据的不整合,也有一些是基于系统逻辑的计算。
   这些问题大多需要仔细分析个案,也有一些通用的信息可以参考。(模块MM-IM-GF-VAL)

518485   – FAQ: Valuation of goods movements
49995     – MMIM: Valuation of return deliveries and GR revrsls
1915844 – How the system valuates a Goods Receipt for a Purchase Order
532932   – FAQ: Valuation logic with active material ledger
212286   – Overview note: Valuation during goods movements
205649   – Net posting during GR to purchase order w/ freight
1702604 – Valuation of subsequent adjustment
1666871 – GBB valuation in a goods receipt and in a reversal for a production order
180503   – Val. logic during transfer posting with reversal movem. type

2139101 – Analysis report for GR/IR clearing postings
518368   – FAQ: Valuation for the purchase order
191927   – Posting logic: GR for foreign currency PO

2. 有相当一部分的不明金额涉及到汇率换算。在有外币参与的货物移动中,汇率的设置和四舍五入等常影响最终的金额。
   (模块MM-IM-GF-VAL)

1951184 – Exchange rate ignored when posting the reversal movement for an account assigned PO
518114   – FAQ: Goods movements in foreign currency
301247   – Exchange rate differences due to rounding during GR
2090966 – Different exchange rates used during goods receipts
1686557 – Unexpected exchange rate difference during goods receipt

3.常见的系统报错

2116886 – Error message M7 508 when transfer posting by using movement 411 K
1619320 – Error ‘M8 147’ is raised when trying to post a goods movement

1908994 – MMPV: Error M3705 – Period closing terminated due to negative stock

367813   – KI235 for goods movements: What should be done?

2046706 – Error message MIGO029 cancelling a material document

1976500 – Error M7022 “PU Withdrawn qty exceeded 0,001 BOX” gets issued when do the GR for outbound

                 delivery

1708261 – Error ‘M7 308’ is raised when trying to post a goods movement

1910162 – Runtime Error ‘MESSAGE_TYPE_X’ is raised when trying to post goods movements

1770578 – Error ‘M7 021’ is raised when trying to post a goods issue in transaction VL02N
1852100 – Error message M8 147 Account determination for entry XXXX ___ XXXX ___ XXXX not possible


4.基础功能问题,比如界面设定等等。(模块MM-IM-GF)

1968590 – Screen Variant not working in MIGO

1824531 – ‘Stock Provided to Vendor’ value in T-cd MMBE is not added into plant level

1953790 – Some fields are not visible in the ‘Distribute Quantity’ pop-up in T-code MIGO

1315985 – FAQ: BAdI MB_DOCUMENT_BADI

968050   – Time zones in material documents (MM)

85485     – MMIM: Transfer of account assignment fields

5.运行时间问题也困扰着一些用户。常见的是在事物代码MB51和MB5B中发生运行时间过长的问题。

   除了查看用户在这些事物代码执行时指定的信息是否过少,从而造成系统读取数据量过大之外,
   以下的一些Note/KBA也提供了常见的解决方法。(模块MM-IM-GF-PERF)


521974   – FAQ: Performance

1904454 – Delay on displaying material document when multiple users do postings in parallel

1598760 – FAQ: MSEG extension & redesign of MB51/MB5B

1516684 – MKPF fields added to MSEG – Performance optimization

1550000 – MB51: Redesign of selection for performance optimization

1965484 – Suite on HANA: Performance Optimization of transaction MR51

1283785 – Slight performance issue while posting goods issue
1921555 – MB5T: How to improve performance and resolve possible dumping / timeout issue


6. 当在货物移动过程中伴随着科目分配类别的使用时,在科目分配类别的决定和金额计算上也有一些
    典型的问题。  
(模块MM-IM-GF-ACT和MM-IM-GF-COBL)


523495   – FAQ: Account determination

2147031 – Usage of FRN in Goods Receipts of Subcontracting Purchase Orders.

616097   – Usage of account modifications GBB-VAY, -VAX, -VKA

216417   – Account determinatn for valuated sales order stock

1954017 – Change to how the partner profit center is determined for goods movements

1898222 – Profit Center and Partner Profit Center update in a Goods Issue.

215931   – Account assignment missing for goods movements

519463   – FAQ: CO Account Assignment

1307143 – Transfer posting with special stock

7.转储也是业务中常见的流程。转储可以分一步或者两步完成,可以与一个库存转移单相关。在这个过程中常见的问题
   和解决方法有:


132567   – Stock transport order w/o SD in 2-step procedure
1915825 – Transfer Posting reference to a Purchase Order in MIGO

1934611 – MMBE: How to adjust MMBE Stock in Transit (Plant to Plant) value by clearing MARC-UMLMC

                 field

1953892 – Not possible to transfer goods from one storage location to another within the same plant when

                 using function LOG_MM_SIT

392205   – Analysis of stock in transit/correction for split valuation

521090   – FAQ: Stock transfer to stock transport order

489543   – Consulting: Return delivery for stock transport order

1618453 – How to fix quantity on stock in transit (Error: M7 022 caused by small rounding amount)

1727922 – Stock in Transit is not cleared with movement types 557/558 in the transaction MB5T

520411   – FAQ: Stock transfer

1679256 – Stock in transit (SiT): Special movement types

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