How To Fix /SCWM/EXT_SYS_LCK002 - You must specify item number when specifying schedule line

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/EXT_SYS_LCK -

• Message number: 002

• Message text: You must specify item number when specifying schedule line

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/EXT_SYS_LCK002 - You must specify item number when specifying schedule line ?

  The SAP error message /SCWM/EXT_SYS_LCK002 indicates that when you are trying to process a schedule line in the Extended Warehouse Management (EWM) module, the system requires an item number to be specified, but it has not been provided. This error typically occurs in scenarios where the system expects detailed information about the items being processed, such as during inbound or outbound delivery processing.
  
  Cause:
  
  Missing Item Number: The most common cause of this error is that the item number is not provided in the transaction or interface where the schedule line is being processed.
  Incorrect Data Mapping: If you are using an external system to send data to SAP EWM, the mapping of fields may not be correctly set up, leading to missing item numbers.
  
  Configuration Issues: There may be configuration settings in EWM that require item numbers for certain processes, and these settings may not be aligned with your business processes.
  
  
  Solution:
  
  Check Input Data: