How To Fix GTR_MF026 - Field &1 must be defined within customer include &2

SAP Error Message - Details

• Message type: E = Error

• Message class: GTR_MF - Multifunding Message Class

• Message number: 026

• Message text: Field &1 must be defined within customer include &2

What causes this issue?

Field &V1& is not defined within customer include &V2&.

System Response

Processing canceled.

How to fix this error?

Correct the field name or create the field within the customer include.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GTR_MF026 - Field &1 must be defined within customer include &2 ?

  The SAP error message GTR_MF026 indicates that a specific field (denoted as &1) must be defined within a customer include (denoted as &2). This error typically arises in the context of enhancements or modifications made to SAP standard programs or structures, particularly when working with custom developments or user-defined fields.
  Cause:
  
  Missing Field Definition: The field specified in the error message is not defined in the customer include that is expected to contain custom fields or enhancements.
  Incorrect Configuration: The configuration or implementation of a custom enhancement may not have been completed correctly, leading to the system not recognizing the field.
  Transport Issues: If the changes were transported from a development environment to a production environment, there may have been issues during the transport process that caused the field definition to be lost or not included.
  
  Solution:
  
  
  Check Customer Include: Verify that the customer include specified in the error message is correctly defined and that the field in question is included in that structure. You can do this by navigating to the relevant include in the ABAP editor (transaction SE38 or SE80).
  
  
  Define the Field: If the field is indeed missing, you will need to define it in the customer include. This typically involves:
  
  Accessing the include file in the ABAP editor.
  Adding the necessary field definition (data type, length, etc.) to the include.
  Activating the include after making changes.
  
  
  
  Check Enhancements: If you are using enhancements (like BAdIs or user exits), ensure that they are correctly implemented and that the field is being populated as expected.
  
  
  Transport Request: If the issue arose after a transport, check the transport request to ensure that all necessary objects were included and transported correctly. You may need to re-transport the changes if something was missed.
  
  
  Consult Documentation: Review any documentation related to the custom development or enhancement to ensure that all necessary steps were followed.
  
  
  Debugging: If the issue persists, consider debugging the program to trace where the error is being triggered and gather more context about the field and its expected definition.
  
  
  Related Information:
  
  Transaction Codes: SE38 (ABAP Editor), SE80 (Object Navigator), SE11 (Data Dictionary).
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific error message or the components you are working with.
  Custom Development Guidelines: Familiarize yourself with SAP's guidelines for custom development to avoid similar issues in the future.
  
  If you are not familiar with ABAP programming or the specific customizations in your SAP system, it may be beneficial to consult with a developer or SAP consultant who can assist in resolving the issue.