How To Fix /SAPDMC/LSMW_OBJ_020018 - The field name '&' is unacceptable and was replaced by '&'.

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPDMC/LSMW_OBJ_020 -

• Message number: 018

• Message text: The field name '&' is unacceptable and was replaced by '&'.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPDMC/LSMW_OBJ_020018 - The field name '&' is unacceptable and was replaced by '&'. ?

  The SAP error message /SAPDMC/LSMW_OBJ_020018 indicates that there is an issue with the field names used in the Legacy System Migration Workbench (LSMW) process. Specifically, the error message states that the field name is unacceptable and has been replaced by another name. This typically occurs when the field names in the source file or the mapping do not conform to the naming conventions or restrictions set by SAP.
  Cause:
  
  Invalid Characters: The field name may contain invalid characters or symbols that are not allowed in SAP field names.
  Length Restrictions: The field name may exceed the maximum length allowed for field names in SAP.
  Reserved Words: The field name may be a reserved word in SAP, which cannot be used as a field name.
  Field Name Format: The field name may not follow the required format (e.g., it may need to start with a specific character).
  
  Solution:
  
  
  Check Field Names: Review the field names in your source file and ensure they conform to SAP's naming conventions. Field names should typically:
  
  Start with a letter (A-Z).
  Contain only letters, numbers, and underscores.
  Be within the maximum length (usually 30 characters).
  
  
  
  Modify Mapping: If you are using a mapping in LSMW, ensure that the mapping does not include any invalid field names. Update the mapping to use acceptable field names.
  
  
  Use Alternative Names: If the field name is unacceptable, consider using an alternative name that adheres to SAP's naming conventions. Update your source file or mapping accordingly.
  
  
  Consult Documentation: Refer to SAP documentation or the LSMW guidelines for specific rules regarding field names and formats.
  
  
  Testing: After making the necessary changes, test the LSMW process again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error.
  LSMW Documentation: Review the official SAP documentation for LSMW to understand the requirements and limitations regarding field names.
  Community Forums: Consider searching or posting in SAP community forums for additional help from other users who may have encountered similar issues.
  
  By addressing the field name issues as outlined above, you should be able to resolve the error message and successfully complete your LSMW process.