How To Fix /SAPDMC/LSMW_OBJ_040020 - No source field can be specified for rule 'fixed value'.

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPDMC/LSMW_OBJ_040 -

• Message number: 020

• Message text: No source field can be specified for rule 'fixed value'.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPDMC/LSMW_OBJ_040020 - No source field can be specified for rule 'fixed value'. ?

  The SAP error message /SAPDMC/LSMW_OBJ_040020 No source field can be specified for rule 'fixed value' typically occurs in the context of using the Legacy System Migration Workbench (LSMW) in SAP. This error indicates that there is an issue with the mapping of fields in your LSMW project, specifically related to the use of a fixed value in a field mapping.
  Cause:
  The error arises when you attempt to define a mapping rule for a field that is set to a fixed value, but you have also specified a source field for that mapping. In LSMW, when you use a fixed value for a field, you do not need to (and should not) specify a source field. The system expects that a fixed value does not require a source field because it is a constant value that will be used during the data upload.
  Solution:
  To resolve this error, follow these steps:
  
  
  Check Field Mapping: Go to the field mapping section of your LSMW project where the error is occurring. Identify the field that is set to a fixed value.
  
  
  Remove Source Field: For the field that is defined with a fixed value, ensure that there is no source field specified. If there is a source field assigned, remove it.
  
  
  Verify Fixed Value: Make sure that the fixed value is correctly defined. This value will be used for all records being processed in the LSMW.
  
  
  Save Changes: After making the necessary adjustments, save your changes.
  
  
  Test the Upload: Run the LSMW process again to see if the error has been resolved.
  
  
  Related Information:
  
  LSMW Overview: LSMW is a tool in SAP that allows for the migration of data from legacy systems into SAP. It supports various methods of data transfer, including batch input, direct input, BAPIs, and IDocs.
  Field Mapping: In LSMW, field mapping is crucial as it defines how fields in the source data correspond to fields in the target SAP system.
  Fixed Values: Fixed values are often used for fields that require a constant input, such as a specific company code, currency, or status that does not change across records.
  
  If you continue to experience issues after following these steps, consider reviewing the LSMW documentation or seeking assistance from an SAP consultant who specializes in data migration.