How To Fix /SAPDMC/LSMW302 - Define source structures first

/SAPDMC/LSMW302 - Overview

• Message type: E = Error

• Message class: /SAPDMC/LSMW -

• Message number: 302

• Message text: Define source structures first

Self-Explanatory Message

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/SAPDMC/LSMW302 - Details

• The SAP error message /SAPDMC/LSMW302 Define source structures first typically occurs in the context of using the Legacy System Migration Workbench (LSMW) in SAP. This error indicates that the source structures for the data migration process have not been defined before attempting to execute a migration project.
  
  Cause:
  The error is caused by the absence of defined source structures in the LSMW project. Source structures are essential as they define the format and structure of the data that you want to migrate into the SAP system. Without these definitions, the system cannot proceed with the data migration process.
  
  Solution:
  To resolve this error, you need to define the source structures in your LSMW project. Here are the steps to do this:
  
  
  Access LSMW:
  
  Go to transaction code LSMW in your SAP system.
  
  
  
  Select Your Project:
  
  Choose the appropriate project, subproject, and object where you want to define the source structures.
  
  
  
  Define Source Structures:
  
  Navigate to the "Source Structures" step in