How To Fix /SAPDMC/LSMW100 - Define source fields first

/SAPDMC/LSMW100 - Overview

• Message type: E = Error

• Message class: /SAPDMC/LSMW -

• Message number: 100

• Message text: Define source fields first

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPDMC/LSMW100 - Define source fields first ?

  The SAP error message /SAPDMC/LSMW100 Define source fields first typically occurs in the context of using the Legacy System Migration Workbench (LSMW) in SAP. This error indicates that the source fields for the data migration process have not been defined or configured properly before attempting to execute the data load.
  
  Cause:
  
  Missing Source Fields: The most common cause of this error is that the source fields have not been defined in the LSMW project. This means that the system does not know which fields to map from the source data to the target SAP fields.
  Incorrect Project Configuration: The LSMW project may not be set up correctly, leading to the inability to identify the source fields.
  Improper Execution Sequence: The steps in the LSMW process may not have been followed in the correct order, leading to this error.
  
  
  Solution:
  To resolve the error, follow these steps:
  
  
  Define Source Fields:
  
  Go to the LSMW transaction (LSMW).
  Navigate to the project,