How To Fix B1879 - Name of external structure too long for function module generation

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 879

• Message text: Name of external structure too long for function module generation

What causes this issue?

The name of the external structure is too long to meet the technical
prerequisites for generating a function module. The maximum length is 26
characters.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Copy the structure to a name with fewer than 27 characters and use this
structure to generate the function module.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1879 - Name of external structure too long for function module generation ?

  The SAP error message B1879, which states "Name of external structure too long for function module generation," typically occurs when the name of an external structure exceeds the maximum length allowed by the SAP system during the generation of a function module. This can happen in various scenarios, such as when defining structures in ABAP or when working with function modules that reference these structures.
  Cause:
  
  Name Length Exceeded: The name of the external structure exceeds the maximum length allowed by SAP, which is usually 30 characters.
  Naming Conventions: The structure name may not adhere to the naming conventions or standards set by your organization or SAP.
  Incorrect Configuration: There may be an issue with the configuration of the function module or the way the external structure is being referenced.
  
  Solution:
  
  Rename the Structure: If the structure name exceeds the limit, consider renaming it to a shorter name that adheres to the 30-character limit.
  Check Naming Conventions: Ensure that the structure name follows the naming conventions and standards set by your organization or SAP.
  Review Function Module: Check the function module that is trying to reference the external structure. Ensure that it is correctly configured and that the structure is being referenced properly.
  Use Shorter Names: If you are creating new structures, use shorter and more concise names to avoid hitting the length limit.
  Consult Documentation: Review SAP documentation or notes related to the specific function module or structure to see if there are any known issues or recommendations.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  ABAP Development Guidelines: Familiarize yourself with the ABAP development guidelines regarding naming conventions and structure definitions.
  Function Module Documentation: Review the documentation for the specific function module to understand its requirements and limitations.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an experienced ABAP developer for further assistance.