How To Fix FMBAS027 - Field &1 missing on the source side of the index

SAP Error Message - Details

• Message type: E = Error

• Message class: FMBAS - FM applic. specific messages for Budgeting & AVC services

• Message number: 027

• Message text: Field &1 missing on the source side of the index

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 FMBAS027 - Field &1 missing on the source side of the index ?

  The SAP error message FMBAS027 indicates that a specific field (denoted as &1) is missing on the source side of an index. This error typically occurs in the context of Financial Accounting (FI) or Asset Accounting (AA) modules when there is an inconsistency in the data structure or configuration related to the index.
  Cause:
  
  Missing Field in Data Structure: The field that is referenced in the error message is not present in the data structure that is being used for the index. This could be due to a configuration issue or a change in the data model.
  Inconsistent Data Model: If there have been recent changes to the data model or if the system has been upgraded, certain fields may have been removed or renamed, leading to this error.
  Custom Development: If there are custom developments or enhancements in the system, they might not align with the standard data structure, causing this error.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the relevant module (FI/AA) to ensure that all necessary fields are correctly defined and available in the data structure.
  Data Model Review: If there have been recent changes or upgrades, check the data model to ensure that the field in question is still part of the index. You may need to adjust the index definition to include the missing field.
  Rebuild Index: If the index is corrupted or not reflecting the current data structure, consider rebuilding the index. This can often resolve inconsistencies.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version you are using to see if there are any known issues or patches that address this error.
  Debugging: If you have access to development tools, you can debug the program or transaction that is generating the error to identify the exact point of failure and the missing field.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to error FMBAS027. SAP frequently releases notes that address known issues and provide solutions.
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary) to check the structure of the relevant tables and indexes.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.