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How to improve SAP EWM performance

 After using the SAP EWM system for a period of time, some customers suddenly encounter performance issues when handling EWM operations, which is often manifested as slow access to the table /lime/nquan.

Particularly during operations such as ：

  • Physical stock is touched
  • Warehouse task confirmation (desktop transaction and RF)
  • posting goods receipt
  • posting goods issue

Most of the time you get these issues with unpacked stocks. The problem is caused by the

  1.  large number of zero stock quantity entries in table /lime/nquan that are not needed.
  2.  large number of stocks on a bin
You should check SAP Note 2019324 - General performance issues in EWM.
In my case, Scheduling the report /LIME/BACKGROUND_DELETE_EXEC frequently is the most important method.

Also, please check SAP Note 2130738 - Many queues generated by mass confirmation of WTs. It is useful in my case.

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