How To Fix R7109 - Field &1 is reserved (please select other names)

SAP Error Message - Details

• Message type: E = Error

• Message class: R7 - BW: Data basis

• Message number: 109

• Message text: Field &1 is reserved (please select other names)

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 R7109 - Field &1 is reserved (please select other names) ?

  The SAP error message R7109, which states "Field &1 is reserved (please select other names)," typically occurs when you are trying to use a field name that is reserved by the SAP system or is not allowed for user-defined fields. This can happen in various contexts, such as when creating custom fields in data dictionary objects, structures, or tables.
  Cause:
  
  Reserved Names: The field name you are trying to use is reserved by SAP for internal use or is part of a naming convention that is not allowed.
  Naming Conventions: SAP has specific naming conventions for fields, and using names that do not conform to these conventions can trigger this error.
  Existing Fields: The name you are trying to use may already be in use by another field or object in the system.
  
  Solution:
  
  Choose a Different Name: The simplest solution is to select a different name for your field that does not conflict with SAP's reserved names. Ensure that the name follows SAP's naming conventions (e.g., starting with a letter, not exceeding the character limit, etc.).
  Check SAP Documentation: Refer to SAP documentation or the data dictionary to find a list of reserved names and ensure that your chosen name is not on that list.
  Use Prefixes: If you are creating custom fields, consider using a prefix (like Z or Y) that is typically reserved for customer developments. This can help avoid conflicts with SAP's reserved names.
  Consult with SAP Support: If you are unsure about the naming conventions or need further assistance, consider reaching out to SAP support or consulting with your SAP Basis or development team.
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for fields, tables, and other objects. This information can usually be found in the SAP Help Portal or specific SAP documentation.
  Data Dictionary (SE11): Use transaction SE11 to explore the data dictionary and check existing field names and their definitions.
  ABAP Development Guidelines: If you are developing in ABAP, refer to the ABAP development guidelines for best practices regarding naming and object creation.
  
  By following these steps, you should be able to resolve the R7109 error and successfully create your field without conflicts.