How To Fix ALSMEX018 - Select master data field before calling info

SAP Error Message - Details

• Message type: E = Error

• Message class: ALSMEX - Message Class for Legacy Data Transfer

• Message number: 018

• Message text: Select master data field before calling info

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ALSMEX018 - Select master data field before calling info ?

  The SAP error message ALSMEX018 typically occurs in the context of using the LSMW (Legacy System Migration Workbench) tool, particularly when trying to import data into SAP. This error indicates that the user has not selected a master data field before attempting to call or process the information.
  Cause:
  The error is caused by the following reasons:
  
  Missing Selection of Master Data Field: The user has not selected a master data field in the LSMW project before executing the data import.
  Incorrect Configuration: The LSMW project may not be properly configured to include the necessary master data fields.
  Data Mapping Issues: There may be issues with how the data is mapped to the fields in the target SAP system.
  
  Solution:
  To resolve the ALSMEX018 error, follow these steps:
  
  
  Select Master Data Field:
  
  Go back to the LSMW project and ensure that you have selected the appropriate master data fields that you want to work with.
  Navigate to the relevant step in the LSMW where you define the structure of the data and ensure that the master data fields are correctly selected.
  
  
  
  Check Project Configuration:
  
  Review the configuration of your LSMW project to ensure that all necessary fields are included and correctly mapped.
  Make sure that the source structure matches the target structure in SAP.
  
  
  
  Data Mapping:
  
  Verify that the data mapping is correctly set up. Ensure that the fields in your source data correspond to the correct fields in the SAP system.
  If necessary, adjust the mapping to include the required master data fields.
  
  
  
  Test the Import:
  
  After making the necessary adjustments, run a test import to see if the error persists.
  Monitor the logs for any additional errors or warnings that may provide further insight.
  
  
  
  Consult Documentation:
  
  If you continue to experience issues, refer to SAP documentation or help resources related to LSMW for additional guidance on configuring master data fields.
  
  
  
  Related Information:
  
  LSMW (Legacy System Migration Workbench): A tool used in SAP for data migration from legacy systems to SAP systems.
  Master Data: Refers to the core data that is essential to operations in a specific business or business unit, such as customer data, vendor data, and material data.
  SAP Notes: Check SAP Notes for any specific updates or patches related to LSMW and the error message ALSMEX018.
  
  By following these steps, you should be able to resolve the ALSMEX018 error and successfully import your data into SAP.